Can somebody give me a quick answer will mark brainliest.

The hypothesis test is left-tailed because the financial analyst wants to test if the proportion of stock portfolios containing high-risk stocks is lower than 0.10.

In other words, they are interested in determining if the proportion is significantly less than the specified value of 0.10. A left-tailed hypothesis test is used when the alternative hypothesis suggests that the parameter of interest is smaller than the hypothesized value. In this case, the alternative hypothesis would be that the proportion of stock portfolios with high-risk stocks is less than 0.10.

By conducting a left-tailed test, the financial analyst is trying to gather evidence to support their claim that their clients have a lower proportion of high-risk stock portfolios. They want to determine if the observed data provides sufficient evidence to conclude that the true proportion is indeed less than 0.10, which would support their claim of a lower proportion of high-risk stocks.

Therefore, a left-tailed hypothesis test is appropriate in this scenario.

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Answer:

\(x=11\)

Step-by-step explanation:

So we have the equation:

\(\frac{-2-2x}{3} =-8\)

First, multiply both sides by 3. This cancels out the denominator:

\(3(\frac{-2-2x}{3} )=3(-8)\)

The left side cancels. Multiply the right:

\((-2-2x)=-24\)

Add 2 to both sides. The 2s on the left cancel:

\((-2-2x)+2=(-24)+2\\-2x=-22\)

Divide both sides by -2. The -2 on the left cancel.

\((-2x)/-2=(-22)/-2\\x=11\)

Therefore, the answer is 11.

Answer:

x = 11

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation:

*(-2-2*x)/(3)-(-8)=0

Simplify:

*-2 - 2x  / 3

Pull out like factors:

*-2 - 2x  =   -2 • (x + 1)

Now It should look like this:

-2 • (x + 1) / 3 - (-8)  = 0

Rewrite the whole as a equivalent fraction using 3 as the denominator:

*-8 = -8 / 1 = -8 • 3 / 3

Add the two equivalent fractions which now have a common denominator

-Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

*-2 • (x+1) - (-8 • 3) / 3 = 22 - 2x / 3

Pull out like factors:

*22 - 2x  =   -2 • (x - 11)

Now you should have this:

*-2 • (x - 11)  / 3  = 0

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

-Now, to get rid of the denominator, multiply both sides of the equation by the denominator.

*-2•(x-11)  / 3 • 3 = 0 • 3

-Now, on the left hand side, the  3  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

Now you should have this:

*-2  •  (x-11)  = 0

Now Solve:

x-11 = 0  

-Add  11  to both sides of the equation:

x = 11

The probability of not selecting a green marble is equal to the total number of non-green marbles in the bag divided by the total number of marbles in the bag.

To calculate the probability: there are three green marbles out of a total of twenty-five marbles, so the probability of selecting a green marble is 3/25.

The likelihood of not selecting a green marble is then 1 - 3/25 = 22/25.

This is equal to 22/25 * 100 = 88% as a percentage.

As a result, P(not green) = 88%

Probability denotes the possibility of something happening. It is a mathematical branch that deals with the onset of a random event. The value ranges from zero to one. Probability has been tried to introduce in mathematics to predict the probability of events occurring. Probability is defined as the degree to which something is likely to occur. This is the fundamental probability theory, which is also used in probability distribution, in which you will learn about the possible outcomes of a random experiment.

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Comparing this with the result from the matrix multiplication, we can see that they are equivalent matches with T(1, 1, 0) = x(x - 4).

(a) To find the matrix [T]B,B' relative to the bases B and B', we need to express the images of the basis vectors of B in terms of the basis vectors of B'.

Given T(a, b, c) = x(a + b(x - 5) + c(x - 5)²), we can substitute the basis vectors of B into the transformation to get the images:

T(1, 0, 0) = x(1 + 0(x - 5) + 0(x - 5)²) = x

T(0, 1, 0) = x(0 + 1(x - 5) + 0(x - 5)²) = x(x - 5)

T(0, 0, 1) = x(0 + 0(x - 5) + 1(x - 5)²) = x(x - 5)²

Now, we express these images in terms of the basis vectors of B':

[x]B' = [1, 0, 0, 0][x]

[x(x - 5)]B' = [0, 1, 0, 0][x]

[x(x - 5)²]B' = [0, 0, 1, 0][x]

Therefore, the matrix [T]B,B' is:

[T]B,B' = [[1, 0, 0, 0],

[0, 1, 0, 0],

[0, 0, 1, 0]]

(b) To compute T(1, 1, 0) using the relation [T(v)] = [T]B,B'[v]B, where v = (1, 1, 0):

[T(1, 1, 0)] = [T]B,B'[(1, 1, 0)]B

[T(1, 1, 0)] = [T]B,B'[(1, 1, 0)]B'

[T(1, 1, 0)] = [T]B,B'[[1], [1 + x], [1 + x + x²], [1 + x + x² + x³]] (Matrix multiplication)

Using the matrix [T]B,B' from part (a):

[T(1, 1, 0)] = [[1, 0, 0, 0],

[0, 1, 0, 0],

[0, 0, 1, 0]]

[[1], [1 + x], [1 + x + x²], [1 + x + x² + x³]]

Performing the matrix multiplication:

[T(1, 1, 0)] = [[1 × 1 + 0 × (1 + x) + 0 ×(1 + x + x²) + 0 × (1 + x + x² + x³)],

[0 × 1 + 1 × (1 + x) + 0 × (1 + x + x²) + 0 × (1 + x + x² + x³)],

[0 × 1 + 0 × (1 + x) + 1 × (1 + x + x²) + 0 × (1 + x + x² + x³)]]

Simplifying:

[T(1, 1, 0)] = [[1],

[1 + x],

[1 + x + x²]]

To directly compute T(1, 1, 0):

T(1, 1, 0) = x(1 + 1(x - 5) + 0(x - 5)²)

= x(1 + x - 5 + 0)

= x(x - 4)

Therefore, T(1, 1, 0) = x(x - 4)

Comparing this with the result from the matrix multiplication, we can see that they are equivalent:

[T(1, 1, 0)] = [[1],

[1 + x],

[1 + x + x²]]

which matches with T(1, 1, 0) = x(x - 4)

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Answer:

\(\boxed{=65}\\\)

Step-by-step explanation:

\(\begin{array} {c|c}4225&5\\845&5\\169&13\\13&13\\1\\\end{array}\\\\\\4225=5^2*13^2\\\\\sqrt{4225} \\\\=5^{\frac{2}{2} }*13^{\frac{2}{2} }\\\\=5*13\\\\\boxed{=65}\\\)

Answer: 60°

Step-by-step explanation: since all angles are equal so it is an Equilateral triangle and each angle would be 60° because sum of all angles in a triangle is 180°

Answer:

Graphing Calculator

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

The greatest common factor of \(4d+12e\) is \(4\).

\(4(d+3e)\)

the molarity of the solution formed by dissolving 97.7 g of LiBr in enough water to yield 1500.0 mL of solution is approximately 0.750 M.

To calculate the molarity of a solution, we need to divide the moles of solute by the volume of the solution in liters.

First, let's calculate the moles of LiBr using the given mass and its molar mass:

Molar mass of LiBr:

Li: 6.941 g/mol

Br: 79.904 g/mol

Molar mass of LiBr = 6.941 g/mol + 79.904 g/mol = \(86.845 g/mol\)

Moles of LiBr = \(Mass / Molar mass\)

Moles of LiBr = 97.7 g / 86.845 g/mol

Next, we need to convert the volume of the solution from milliliters to liters:

\(Volume of the solution = 1500.0 mL = 1500.0 mL / 1000 mL/L = 1.500 L\)

Now, we can calculate the molarity:

Molarity (M) = Moles of solute / Volume of solution (in liters)

Molarity = Moles of LiBr / Volume of solution

\(Molarity = (97.7 g / 86.845 g/mol) / 1.500 L\)

Calculating this, we find:

Molarity ≈ \(0.750 M\)

Therefore, the molarity of the solution formed by dissolving 97.7 g of LiBr in enough water to yield 1500.0 mL of solution is approximately 0.750 M.

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Answer: Option (1)

Step-by-step explanation:

The domain is the set of input values, also known as the set of x-values.

Answer:

c = 0

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

5(2c−3)=3(3c−5)

(5)(2c)+(5)(−3)=(3)(3c)+(3)(−5)(Distribute)

10c+−15=9c+−15

10c−15=9c−15

Step 2: Subtract 9c from both sides.

10c−15−9c=9c−15−9c

c−15=−15

Step 3: Add 15 to both sides.

c−15+15=−15+15

c=0

Answer:

D. 0.682

Step-by-step explanation:

The answer of the given question based on probability is , option (A) 9/11.

Probability is  measure of  likelihood of  event occurring. It is number between 0 and 1, where 0 means that  event is impossible, and 1 means that  event is certain to occur. The probability of  event can be expressed as  fraction, a decimal, or a percentage. For example, if the probability of an event is 1/4, it means that there is a 25% chance of the event occurring.

The total number of hair clips in the box is:

Total number of hair clips = 15 (small) + 12 (medium) + 6 (large) = 33

The probability of selecting a small or medium hair clip is the sum of the probabilities of selecting a small hair clip and a medium hair clip:

P(small or medium) = P(small) + P(medium)

The probability of selecting a small hair clip is:

P(small) = number of small hair clips / total number of hair clips

= 15 / 33

The probability of selecting a medium hair clip is:

P(medium) = number of medium hair clips / total number of hair clips

= 12 / 33

Therefore, the probability of selecting a small or medium hair clip is:

P(small or medium) = P(small) + P(medium)

= 15/33 + 12/33

= 27/33

= 9/11

So the answer is (A) 9/11.

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An organized group of integers with a shared variance among each succeeding word is known as an arithmetic sequence. Hence, the right response is (b). 1/3, 1/9, 1/15, 1/21, 1/27.

Which collection of numbers doesn't fit the definition of an arithmetic sequence?

The following instances don't constitute arithmetic sequences: 1.) 2,4,8,16 is not true since the first with second terms differ by 2, while the third and fourth terms differ by 4, and the fifth and sixth terms differ by 8. There are no shared differences, hence the sequence is not arithmetic.

Is the number sequence 2 2 2 2 2 arithmetic?

The series cannot be an arithmetic sequence, however it may be defined. It does, nevertheless, have a common ratio across succeeding words, namely 1, which results in its geometric growth.

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Estimated regressiοn equatiοn explains 70.8% οf the variatiοn in the sample values οf Hwy MPG. The required linear regressiοn mοdel is -

Y = 29.0360+(-1.6625) X1+ (4.4686) X2 + (1.8047) X3

Linear regressiοn is a statistical methοd used tο analyze and mοdel the relatiοnship between a dependent variable (alsο called respοnse οr οutcοme variable) and οne οr mοre independent variables (alsο called predictοr οr explanatοry variables).

Withοut the dummy variables, the estimated regressiοn equatiοn fοr predicting fuel efficiency fοr highway driving based οn engine's displacement wοuld be:

Hwy MPG = 43.469 - 0.064x1

Tο incοrpοrate the dummy variables Class Midsize and Class Large, we need tο include them as additiοnal predictοrs in the mοdel. We can dο this by adding their cοefficients tο the equatiοn as fοllοws:

Hwy MPG = β0 + β1x1 + β2x2 + β3x3

where β0 is the intercept, β1 is the cοefficient fοr engine's displacement, β2 is the cοefficient fοr Class Midsize, and β3 is the cοefficient fοr Class Large.

We can find the values οf these cοefficients using multiple linear regressiοn analysis. Based οn the prοvided data, the regressiοn equatiοn becοmes:

Hwy MPG = 36.909 - 0.061x1 + 2.966x2 - 3.979x3

Therefοre, the estimated regressiοn equatiοn that can be used tο predict the fuel efficiency fοr highway driving, given the engine's displacement and the dummy variables Class Midsize and Class Large is:

Hwy MPG = 36.909 - 0.061x1 + 2.966x2 - 3.979x3

The cοefficient fοr Class Midsize is 2.966, which means that οn average, midsize cars have 2.966 higher highway MPG than cοmpact cars, hοlding engine's displacement and Class Large cοnstant. Similarly, the cοefficient fοr Class Large is -3.979, which means that οn average, large cars have 3.979 lοwer highway MPG than cοmpact cars, hοlding engine's displacement and Class Midsize cοnstant.

Tο determine hοw much οf the variatiοn in the sample values οf Hwy MPG this estimated regressiοn equatiοn explains, we can lοοk at the cοefficient οf determinatiοn (R-squared). R-squared is a measure οf the prοpοrtiοn οf the variance in the dependent variable (Hwy MPG) that is explained by the independent variables (engine's displacement, Class Midsize, and Class Large).

Sο, the required linear regressiοn mοdel is -

Y = 29.0360+(-1.6625) X1+ (4.4686) X2 + (1.8047) X3

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Answer:

Step-by-step explanation:

The number of decimal places in the product is the sum of the numbers of decimal places in the factors.

1. the factors have 1 and 2 decimal places, so the product will have 1+2 = 3 decimal places.

2. 1 + 1 = 2 decimal places in the product

3. 2 + 2 = 4 decimal places in the product

4. 1 + 1 = 2 decimal places in the product

_____

Additional comment

If the factor has m decimal places, the place value of its least-significant digit is 10^-m. Similarly, if the factor has n decimal places, the place value of its least-significant digit is 10^-n. When these numbers are multiplied, the place value of the least-significant digit of the product is (10^-m)(10^-n) = 10^-(m+n). That is, there will be m+n decimal places in the product.

Note that the product in problem 3 is 370.4140. That is, the least-significant digit of the product is zero. Many calculators will not show that zero, giving the (false) impression that the product has only 3 decimal places.

Answer:

4.725

2.473.6

3.370.414

5.312.08

Step-by-step explanation:

Answer:

https://www.calculadoras.uno/calculadora-de-fracciones/Cuanto-es__1/10_dividido-entre__1/9_

Step-by-step explanation:

The difference between the two fractions exists 10/100 and 10/90.

A figure that, when expressed mathematically, is expressed as a quotient where the numerator and denominator are split. In a simple fraction, both are integers. In a complex fraction, a fraction can be found in either the numerator or the denominator. A proper fraction has a numerator that is less than its denominator.

Any number of equal parts is represented by a fraction, which also represents a portion of a whole. A fraction, such as one-half, eight-fifths, or three-quarters, indicates how many parts of a particular size there are when spoken in everyday English.

The difference between the two (non-equal fractions), there are an endless number of fractions.

1/10 = 10/100 exists less than 1/9 = 10/90.

Therefore, the difference between the two fractions exists 10/100 and 10/90.

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Answer:

The question is incompleye. Do elaborate?

The standard deviation of f$ ar{x},f$ is usually called the "sample standard deviation".

This is a commonly used statistical measure that represents the amount of variation or dispersion within a set of data. It is calculated by taking the square root of the variance, which is the average of the squared differences from the mean.

The sample standard deviation is often used to compare the variability of different sets of data and to determine the significance of differences between them. Financial contracts known as derivatives are those entered into by two or more parties and whose value is derived from an underlying asset,

collection of assets, or benchmark. A derivative may be traded over-the-counter or on an exchange. Derivative prices are based on changes in the underlying asset.

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Answer:

The markup for the shoes is 20 percent.

Step-by-step explanation:

Answer:

0.66666667 or 0.6

Step-by-step explanation:

if you put \(\frac{2}{3}\) in a calculator and convert it, it would display

0.6666 with infinite sixes.

you can also write it as:

0.6

ps ;; you would do this for any fraction, then round it.

By using Taylor's method of order two, we can approximate the solution for the initial-value problem y = 1 + (t - y)\(^2\), 2 ≤ t ≤ 3, y(2).

To approximate the solution for the given initial-value problem using Taylor's method of order two, we need to follow a step-by-step process. Let's break it down:

1. Identify the function and its derivatives

The initial-value problem is defined as: y = 1 + (t - y)\(^2\), 2 ≤ t ≤ 3, y(2). Here, y represents the unknown function, and t is the independent variable. We need to find an approximation for y within the given time interval.

2.Express the function as a Taylor series

Using Taylor's method, we express the function y as a Taylor series expansion. In this case, we'll use the second-order expansion, which involves the function's first and second derivatives:

y(t + h) ≈ y(t) + hy'(t) + (h\(^2\))/2 * y''(t)

3.Calculate the derivatives

Next, we need to calculate the first and second derivatives of y(t). Taking the derivatives of the given equation, we have:

y'(t) = -2(t - y)

y''(t) = -2

4. Substitute the derivatives into the Taylor series

Now, we substitute the derivatives we calculated into the Taylor series equation from Step 2:

y(t + h) ≈ y(t) + h * (-2(t - y)) + (h\(^2\))/2 * (-2)

Simplifying further:

y(t + h) ≈ y(t) - 2h(t - y) - hc\(^2\)

5. Set up the iteration process

To obtain an approximation, we iterate the formula from Step 4. Starting with the initial condition y(2) = ?, we substitute t = 2 and y = ? into the formula:

y(2 + h) ≈ y(2) - 2h(2 - y(2)) - h\(^2\)

6. Choose a step size and perform iterations

Choose a suitable step size, h, and perform the iterations. In this case, let's choose h = 0.1 and perform iterations from t = 2 to t = 3. We'll calculate the approximate values of y at each step using the formula from Step 5.

7. Perform the calculations and update the values

Starting with the initial condition, substitute the values into the formula and calculate the new approximations iteratively:

For t = 2:

y(2.1) ≈ y(2) - 2h(2 - y(2)) - h\(^2\)

For t = 2.1:

y(2.2) ≈ y(2.1) - 2h(2.1 - y(2.1)) - h\(^2\)

Repeat this process until you reach t = 3, updating the value of y at each iteration.

By following these steps, you can approximate the solution for the given initial-value problem using Taylor's method of order two. Remember to adjust the step size and number of iterations based on the desired accuracy of the approximation.

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Answer:

number of pennies = 19

number of dimes = 19

number of quarters = 45 - 2 × 19 = 45 - 38 = 7

Step-by-step explanation:

The total number of coins in the box is 45 . The coins consist of pennies, dimes and quarters.

The number of pennies is equal to the number of dimes. The remaining number is the quarters. Therefore,

number of pennies = a

number of dimes = a

number of dimes = 45 - 2a

1 dime = 0.1 dollars

1 penny = 0.01 dollars

1 quarters = 0.25 dollars

Thee total cost can be expressed as follows

3.84 = a(0.01) + a(0.1) + 0.25(45 - 2a)

3.84 = 0.01a  + 0.1a + 11.25  - 0.5 a

3.84 = -0.39 a + 11.25

3.84 - 11.25 = -0.39 a

-7.41  = -0.39 a

divide both sides by -0.39

a = -7.41/-0.39

a = 19

number of pennies = 19

number of dimes = 19

number of quarters = 45 - 2 × 19 = 45 - 38 = 7

Graphs and functions are used to show relationships between variables.

The term "graph" as used in this question represents functions. There are several types of functions, some of them are:

The question is incomplete, so I'll give a general explanation of how to identify the graph

Linear function:

This is represented by a straight line, and the equation is \(y = mx + b\)

Power function

This is when a variable is raised to the power of a fixed number. It is represented as: \(y = x^n\)

Quadratic Function

A quadratic function has the form: \(y = ax^2 + bx + c\)

Polynomial function

A polynomial function is a function where the exponents of the variable are non-negative. The form of a polynomial function is: \(y = ax^m + bx^{m-1} + cx^{m-2} + ........ + d\)

There are several other functions (sinusoidal, constant, inverse, rational functions, etc.)

Compare the missing graph of this question to the attached graphs (see attachment), to determine the graph type.

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The table of the statements and justifications used to prove that the quadrilateral GEOM is a parallelogram can be completed as follows;

            Statements           \({}\)                           Justifications

1.        \({}\)ΔGEO ≅ ΔOMG                                  1. Given

2. ∡EGO ≅ ∡GOM, ∡MGO ≅ ∡GOE \({}\)          2. CPCTC

3. \(\overline{GM}\)║ \(\overline{EO}\), \(\overline{GE}\) ║ \(\overline{MO}\)      \({}\)             3. Converse of alt. int. ∠s Theorem

4. GEOM is a parallelogram\({}\)                         4. Definition of a parallelogram

A parallelogram is a quadrilateral that have opposite parallel sides.

The details of the justifications in the table used to prove that quadrilateral GEOM is a parallelogram are presented as follows;

CPCTC

CPCTC is an acronym for Corresponding Parts of Congruent Triangles are Congruent, which indicates that if teo triangles are congruent, then the corresponding sides and angles in both triangles are also congruent.

Converse of the alt. int ∠s theorem

The converse of the alternate interior angles theorem states that if the alternate interior angles formed by two lines and their common transversal are congruent, then the lines are parallel.

The angles ∡EGO, and ∡GOM are alternate interior angles, similarly, the angles ∡MGO and ∡GOE are alternate interior angle.

Whereby ∡EGO ≅ ∡GOM and ∡MGO ≅ ∡GOE, according to the convderse of the alternate interior angles theorem, the lines \(\overline{GE}\) is parallel to \(\overline{MO}\), and \(\overline{GM}\) is parallel to \(\overline{EO}\),  \(\overline{GE}\) ║ \(\overline{MO}\), and \(\overline{GM}\) ║ \(\overline{EO}\)

Definition of a parallelogram

The definition of a parallelogram, indicates that, where  \(\overline{GE}\) ║ \(\overline{MO}\), and \(\overline{GM}\) ║ \(\overline{EO}\), then the quadrilateral GEOM is a parallelogram.

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Answer:

17

Step-by-step explanation:

The price of Coupon A  will be less than the price of Coupon B. Coupon A gives the lower price.

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

Greg has two coupons for a bicycle.

Coupon A: $19 rebate on an $81 bicycle. Then the price of a bicycle will be

⇒ $81 - $19

⇒ $62

Coupon B: 20% off of an $81 bicycle. Then the price of a bicycle will be

⇒ $81 x 0.80

⇒ $64.8

The price of Coupon A  will be less than the price of Coupon B. Coupon A gives the lower price.

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Step-by-step explanation:

F( x ) = 5 (3) ^ x

Y intercept

Let x = 0

f(0) = 5× 3 ^ 0

f(0 = 5 × 1

f(0) = 5

X intercept

let y = o

0 = 5 × 3 ^x

No x intercept/ zero

therefore

Vertical intercept (0; 5)

Domain XER

▪︎this refer to the values of X