Please please help me please please help please please please help me please please help please

Answer:

The margin of error is  \(E = 1.96 * \frac{ 0.92}{\sqrt{28 } }\)

Step-by-step explanation:

From the question we are told that

    The sample size is  \(n = 28\)

     The  sample  mean is  \(\= x = 2.4 \ hr\)

      The  standard deviation is  \(\sigma = 0.92 \ hr\)

Given that the confidence level is 95% the the level of significance can be evaluated as

             \(\alpha = 100 -95\)

            \(\alpha = 5 \%\)

             \(\alpha = 0.05\)

Next we obtain the critical value of  \(\frac{\alpha }{2}\) from the normal distribution table,the value is  \(Z_{\frac{\alpha }{2} } = Z_{\frac{0.05}{2} } = 1.96\)

Generally the margin of error is mathematically represented as

           \(E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }\)

substituting values

          \(E = 1.96 * \frac{ 0.92}{\sqrt{28 } }\)

         \(E = 0.3408\)

Answer:

6/8

Step-by-step explanation:

simplify and find the slope

The values of the quantities Q1, Q2, Q3,... and Qₙ are

25, 25+25(0.07), 25+25(0.07)+25(0.07)² and Qₙ = 25(1-(0.07)ⁿ/(1-0.07)

Given:

Suppose the drug atenolol is taken in 25 mg doses once a day to lower blood pressure.

At the end of a 24 hour period, approximately 7 % of the atenolol is still present.

we are asked to find the expressions for the quantities Q1, Q2, Q3, . . ., and Qn, representing the amounts of atenolol in the body right after taking the 1st, 2nd, 3rd doses respectively.

hence:

Q1 = 25

Q2 = 25+25(0.07)

Q3 = 25+25(0.07)+25(0.07)²

Qₙ = 25(1-(0.07)ⁿ)/(1-0.07)

(b) we are asked to find expressions for the quantities P2, P3, P4, . . ., and Pn representing the amount of atenolol in the body right before taking the 2nd, 3rd, 4th doses respectively.

P2 = 25(0.07)

P3 = 25(0.07)+25(0.07)²

P4 = 25(0.07) + 25(0.07)² + 25(0.07)³

Pₙ = 25(0.07) × [1-(0.07)ⁿ]/[1-0.07]

Hence we get the required expressions.

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Answer:

66.3

Step-by-step explanation:

i just did it on deltamath

The election poll indicates a close race between Candidate Smith and Candidate Jones, with a margin of error of 3 percent.

Given that,

Election poll of 1,000 people conducted

48 percent of voters favor Candidate Smith

50 percent of voters favor Candidate Jones

Margin of error is 3 percent

Based on the election poll,

We can conclude that there is a close race between Candidate Smith and Candidate Jones.

With Candidate Smith at 48 percent and Candidate Jones at 50 percent, it suggests a tight competition.

However, it's important to consider the margin of error of 3 percent.

This means that the actual support for each candidate could vary within this range.

Therefore, while this poll provides valuable insights, it is not definitive and other factors should also be considered.

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The correlation coefficient between U and V is -0.5587 and it illustrates to at there's a negative relationship between U and V.

The data shows that:

E(x) = 1

E(y) = 2

E(z) = 3

Var(X) = 2² = 4

Var(Y) = 4² = 16

Var(Z) = 5² = 25.

Cov(U, V) = 16

Var(U) = Var(Z - Y)

= 25 - 0 + 16

= 41

The correlation coefficient will be:

= -16/✓(20 × 41)

= -0.5587

The correlation coefficient between U and V is -0.5587 and it illustrates to at there's a negative relationship between U and V.

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Answer: C

Step-by-step explanation:

This is just a straight definition - for a normal distribution, the percent within 2 standard deviations of the mean is about 95.44%.

The percentage of cars to drive greater than 75 miles will be 89.1%

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

Given that;

The speed of cars on the highway have a mean go 67mph and a standard deviation of 5 miles.

Now,

Since, We know that;

The z-score of a measure X of a normally distributed variable with mean μ and standard deviation σ is given by;

⇒ z - score = (X - μ) / σ

Substitute all the values, we get;

⇒ z - score = (75 - 67) / 5

⇒ z - score = 8/5

⇒ z - score = 1.6

It has p - value = 0.109

So, We get;

The percentage of cars to drive greater than 75 miles = 1 - 0.109

                                                                                    = 0.891

                                                                                     = 89.1%

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Answer

Step by step explantion:

bsf= 26

Eliana:98

SS teacher=203

David=55

Step-by-step explanation:

m= music

bsf: m

eliana:4m-6

David:2m+3

SS teacher: 2(4m-6)+7

m+4m-6+2m+3+8m-12+7

382=15m-7

7+ +7

389=15m

/15m /15m

m=26

multiply 26 to each one of them

Answer:

355 ÷ 8 = 44 with remainder 3

Step-by-step explanation:

                              44

                         -------------------------

                    8   | 355

                        -  32

                       --------

                              35

                           -  32

                           ------

                                3

Answer:

$12,581.53

Step-by-step explanation:

The balance of an account after having interest compounded annually can be represented using the equation:

\(A = P(1 + r)^{t}\)

where \(A\) is the final balance, \(P\) is the principal (starting amount), \(r\) is the rate of interest, and \(t\) is the number of years that interest is applied.

We can plug the given values into this equation and solve for \(A\).

\(P = \$10,000\)     \(r = 4.7\%\)     \(t = 5\)

\(A = 10,000(1 + 4.7\%)^{5}\)

\(A \approx \$12,581.53\)

So, Sally's balance in an account that had $10,000 before being compounded for 5 years at an interest rate of 4.7% is $12,581.53.

Answer:

First table (far left)

Step-by-step explanation:

The far-left table is the only function with a constant rate. All other tables do not contain this.

Answer:

graph C 2, 1) 1×200?

Step-by-step explanation:

é assim que você não faz nada

Answer:

B

Step-by-step explanation:

-> is read as greater than and the line underneath means equal to, so y is greater than or equal to the equation

-With this, we can determine that the area must be on the right (Positive) side of the line.

- Usually, when the line/circles later on are in bold or complete, it means that those numbers are included as well. Graph b has a full line, which means the numbers are included

-You want the numbers included because it needs to be equal to as well as bigger than.

The value of x is 18.8m

Given:

θ = 48°

Y = 17m

The law of tangent which is also called as tangent formula or tangent rule is the ratio of the sine of the angle to the cos of the angle.

tan θ = Opposite / Adjacent.

Here,

Sum of triangle = 180°

90° + 48° + x° = 180°

x° = 42°

tan θ = opposite/ adjacent.

Substituting the values

tan 42° = 17/x  (∴tan 42° = 0.9004)

0.9004 = 17/x

So we get,

x = 17/0.9004

x = 18,8m

Therefore, the value of x is 18.8m.

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Answer:

x = 5

Step-by-step explanation:

assuming you mean the slope of the line id undefined and passes through (5, 0 )

A line with an undefined slope is a vertical line parallel to the y- axis with equation

x = c ( c is the value of the x- coordinates the line passes through )

the line passes through (5, 0 ) with x- coordinate 5 , then

x = 5 ← equation of line

Answer:

7

Step-by-step explanation:

Answer:

mira ami me aparece cien

Step-by-step explanation:

pues creo que no es

The decimal value that express the total percent markdown for the given scenerio are 0.5,0.31,0.09.

Given the total percent markdown for the following scenario, after being rounded to the nearest percent:50%, 31%,and 9%

Percentage is a ratio of the numbers expressed as a fraction of 100.

We have to just convert the percentages into decimal number which will be done as under:

To convert percentages into decimals we need to divide the number by 100. In this way the percentages will become:

50%=50/100

=0.5

31%=31/100

=0.31

9%=9/100

=0.09

Hence the decimal value of 50% ,31 % and 9% in percentages are 0.5,0.31,0.09.

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Answer:0.69

Step-by-step explanation:

Answer:

42 dollars -x......................

Answer:

The answer is it is true.hope the day is saved

Answer:

Step-by-step explanation:

B( 3, -3) given the figure

B' ( 3, 3) because the x-axis intersects the mid point between B and B'

A) (x, y) reflected across x-axis becomes ( x, -y)

B) (x, y) reflected across y-axis becomes ( -x, y)

Answer:

Those ratios are not equivalent

Step-by-step explanation:

3:4 is not the same as 4:3 because 3:4 means 3 out of 4 but 4:3 means 4 out of 3 which means it is more than one while 3:4 is less than one

Answer:

5^2,5^4,5^6,5^8,5^10

Step-by-step explanation:

You are given 2nd term is 5^4 and 5th term is 5^10.

Since this is a geometric sequence, the sequence is of the form:

a,ar,ar^2,ar^3,ar^4,....

So setting up a proportion we can find the common ratio r:

(ar^4)/(ar)=(5^10)/(5^4)

Simplifying both sides:

r^3=5^6

r=5^(6/3)

r=5^2

If ar=5^4 ​and r=5^2 then a=5^2. Why? Because 5^2×5^2=5^4.

So

a=5^2

ar=5^2(5^2)=5^4

ar^2=5^2(5^2)^2=5^2(5^4)=5^6

ar^3=5^2(5^2)^3=5^2(5^6)=5^8

ar^4=5^2(5^2)^4=5^2(5^8)=5^10

So fill in time into:

a,ar,ar^2,ar^3,ar^4,....

5^2,5^4,5^6,5^8,5^10,....

Answer:

choose C

Step-by-step explanation:

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When y = -x² + 15x - 56 then coordinates are is (c) (-7, 0); (8, 0).

Quadratic functions are a type of polynomial function of degree 2, which can be expressed in form f(x) = ax² + bx + c, where a, b, and c are constants, and x is the variable.

The graph of the given quadratic equation y = -x² + 15x - 56 can be plotted using a graphing calculator or any graphing tool. The x-intercepts are the points on the x-axis where the graph intersects the x-axis, i.e., the points where y = 0. By plotting the graph, we can determine the x-intercepts to be (-7, 0) and (8, 0), which correspond to option (c) (-7, 0); (8, 0).

Option (a) and (b) have incorrect x-coordinates for the x-intercepts, and option (d) has both positive x-coordinates for the x-intercepts, which is not correct based on the graph of the given quadratic equation.

Hence, option (c) is the correct answer.

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Her next step in obtaining the area of the triangle is replacing the numeric values of h and y into the area formula.

The area of a rectangle of base b and height h is given by half the multiplication of dimensions, as follows:

A = 0.5bh.

The dimensions for this problem are given as follows:

Hence the formula is:

A = 0.5yh.

Hence the actual values of y and h must be inserted into the formula to obtain the area of the triangle.

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Answer:

The value is   \(p-value  =  0.22663\)

Step-by-step explanation:

From the question we are told that

    The proportion of bruised tomatoes p =  0.08

    The  null hypothesis is  \(H_o  :   p =  0.08\)

    The alternative hypothesis is  \(H_a  :  p >  0.08\)

    The sample size is  n  =  600

    The number of bruised tomatoes from the sample selected is  k  =  53

    The test statistics is  z =0.75

Generally the p-value is mathematically represented as

      \(p-value  =  P(Z > z)\)

=>    \(p-value  =  P(Z > 0.75)\)

From the z-table  

    \(P(Z > 0.75) =  0.22663\)

So  

    \(p-value  =  0.22663\)

Answer:

P-value ≈ 0.2266

Step-by-step explanation:

Answer:

es verdad pero 3 nomas puede ser dividido por 3 o 1

Step-by-step explanation:

Answer:

add/hyp

Step-by-step explanation:

using SOHCAHTOA cosine of an angle A will be adjacent/ hypotenus

Brian gets 5x and Colin gets x amount.

Brian gets 60 more than Colin, so you get:

5x - x = 60

Simplify to get:

4x = 60

Divide both sides by 4:

x = 15

Brian gets 5x = 5(15) = 75

Colin gets x = 15

75 + 15 = 90

The total amount they get is £90

Answer:

It is 2707.1209

Step-by-step explanation: