answer this fast pls pls

To determine the limits within which 95 percent of the sample means will occur, we can use the concept of confidence intervals.

To determine the critical value corresponding to a 95 percent confidence level, we consider the standard normal distribution (Z-distribution) and calculate the value at the 2.5th and 97.5th percentiles. This corresponds to a 95 percent confidence level, with 2.5 percent of the data falling below the lower limit and 2.5 percent above the upper limit.

Using the standard error and the critical value, we can calculate the confidence interval for the sample means. The lower limit is found by subtracting the product of the standard error and the critical value from the population mean, and the upper limit is found by adding this product.

Therefore, the 95 percent confidence interval for the sample means will occur within the limits obtained by subtracting and adding the product of the standard error and the critical value from the population mean of 6,000 pounds.

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Answer:

No, not a solution.

Step-by-step explanation:

Substitute x = -96 and solve for y.

-301(-96) - 96 = y

28896 - 96 = 28800 = y

So when x = -96, y = 28800.

The coordinate given (-96,0) has 0 for y.

So this is NOT a solution!

Answer:

(-96,0) is not a solution to the given equation.

Step-by-step explanation:

Given the equation y = –301x + –96 is (-96,0) a solution to the system?

To verify a solution simply plug the point into the equation.

\(y = -301x-96; \ (x,y) \rightarrow (-96,0)\\\\\Longrightarrow 0= -301(-96)-96\\\\\Longrightarrow 0= 28896-96\\\\\boxed{0 \neq 28,000} \therefore \ (-96,0) \ \text{is not a solution to the given equation.}\)

To guarantee that the 3 team compositions (and team leads) are repeated, the professor would need to form groups a total of 3 times over the course of the semester. Each time the professor forms groups, there would be 3 possible team compositions (since the team lead can change within each group) and after 3 formations, all 3 compositions would have been used and repeated.

To determine the number of possible unique team compositions and team leads that can be formed.
1. First, we'll find the number of ways to choose team leads for each group:
There are 12 students and 3 team leads needed, so there are 12 choose 3 ways to pick the team leads, which is calculated as C(12,3) = 12! / (3! * (12-3)!) = 220.
2. Now, we'll calculate the number of ways to divide the remaining 9 students into 3 groups of 3 students each. We can use the multinomial coefficient formula, which is:
C(9,3,3,3) = 9! / (3! * 3! * 3!) = 1680
3. To find the total number of unique team compositions (including team leads), we multiply the results from steps 1 and 2 Total unique team compositions = 220 * 1680 = 369,600
4. The professor needs to form the groups 369,601 times in order to guarantee that the 3 team compositions (and team leads) will repeat.

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Answer:

y = - 2x + 9

Step-by-step explanation:

From y = -2x + 1

comparing with y = mx + c

slope (m) = - 2

Writing in point slope form

y - y1 = m(x - x1)

y - 1 = -2( x - 4)

y - 1 = -2x + 8

Now writing in slope intercept form

y = - 2x + 8 + 1

y = -2x + 9

Hope it will help :)

Answer:

69.3

Step-by-step explanation:

70-0.7

Answer:

$69.3

Step-by-step explanation:

I did mental math

Answer:

The answer is A.

Step-by-step explanation:

The answer is A because if you divide the price by how many are sold it comes out to 14.75.

Answer: A

Step-by-step explanation:

1 book cost $14.75

2 books cost $29.50

3 books cost $44.25

4 books cost $59.00

5 books cost $73.75

6 books cost $88.50

7 books cost $103.25

Based on the provided information of speed, A) Beth gets to San Francisco first. B) The first to arrive has to wait for 20 minutes for the second to arrive.

A) To find out who gets to San Francisco first, we need to calculate the time it takes for each of them to travel the distance of 400 miles.

For Brian, we use the formula time = distance / speed:

time = 400 miles / 50 mph = 8 hours

So Brian will arrive in San Francisco at 4:00 p.m. (8:00 a.m. + 8 hours).

For Beth, we use the same formula:

time = 400 miles / 60 mph = 6.67 hours

So Beth will arrive in San Francisco at 3:40 p.m. (9:00 a.m. + 6.67 hours).

Therefore, Beth gets to San Francisco first.

B) To find out how long the first to arrive has to wait for the second, we subtract the arrival time of the first from the arrival time of the second:

wait time = 4:00 p.m. - 3:40 p.m. = 0.33 hours = 20 minutes

So the first to arrive has to wait for 20 minutes for the second to arrive.

Note: The question is incomplete. The complete question probably is: Brian leaves Los Angeles at 8:00 a.m. to drive to San Francisco, 400 miles away. He travels at a steady speed of 50 mph. Beth leaves Los Angeles at 9:00 a.m. and drives at a steady speed of 60 mph. A) Who gets to San Francisco first? B) How long does the first to arrive have to wait for the second?

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As a result, 47 degrees of freedom represent the essential t value ().

Least. To contrast one thing to another, degrees of comparison are employed. One thing or person is described in the positive degree. When comparing two things or people, utilize the comparative degree. Moreover, the exceptional degree is employed to describe groups, individuals, or more than two objects.

The following formula must be used to get the freedom degrees for the crucial t value ():

df = n - 1

where the sample size is "μ". The sample size in this instance is 48, so:

df = 48 - 1

df = 47

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Answer:

4 miles=80 min?

Step-by-step explanation:

Question is confusin bruv

To determine which expressions represent vectors, we need to understand the properties and characteristics of vectors. A vector is a mathematical object that has both magnitude and direction.

It can be represented geometrically as an arrow in space, where the length of the arrow represents the magnitude of the vector, and the direction of the arrow represents the direction of the vector.

Based on this definition, we can identify the expressions that represent vectors:

1. → u: This expression represents a vector. The arrow symbol (→) indicates that it has both magnitude and direction.

2. → v: Similarly, this expression represents a vector. The arrow symbol (→) indicates that it has both magnitude and direction.

3. k → u: This expression also represents a vector. Multiplying a vector by a scalar (k) does not change its nature as a vector. It only scales the magnitude of the vector while keeping its direction intact.

4. → u + → v: This expression represents a vector. Adding two vectors together results in another vector with a magnitude and direction determined by the combination of the original vectors.

5. → u - → v: Similarly, this expression represents a vector. Subtracting one vector from another also results in a new vector with a magnitude and direction determined by the operation.

6. k(→ u + → v): This expression represents a vector. Here, we have both scalar multiplication (k) and vector addition (→ u + → v), which combine to produce another vector.

The expressions listed above all represent vectors because they possess both magnitude and direction, which are fundamental properties of vectors.

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Answer:

The answers is A

Step-by-step explanation:

in this graph the shape is going to the right by 2 spots But it is not going down

It you look at the x axis you can see that it is counting by twos

so it is going right 2 (x+2) and y stay the same :)

Answer:

See the attached file

Step-by-step explanation:

Given data

Say numbers of printer made per hour = 5 printers

Hence in 1 hour, they will make 5 printers

in 4 hours they will make

=4*5

=20 printers

The graph of this situation when plotted will give a straight line graph

Kindly find attached a straight line graph for your reference

Answer:

Need to know the shape of object (cylinder, cone, etc)

We need a sample size of at least 665 drivers to estimate the proportion of all drivers exceeding the legal speed limit on the certain stretch of road between Los Angeles and Bakersfield with a margin of error of 0.04 and a 99% confidence level.

To estimate the proportion of all drivers exceeding the legal speed limit on a certain stretch of road between Los Angeles and Bakersfield with a margin of error of 0.04 and a 99% confidence level, we need to use the following formula:

\(n = (Z^2 * p * (1 - p)) / E^2\)

where n is the sample size, Z is the Z-score for the desired confidence level (2.576 for 99% confidence level), p is the estimated proportion of drivers exceeding the speed limit (we don't have an estimate, so we'll use 0.5 for maximum variability), and E is the margin of error we want (0.04).

Plugging in the values, we get:

\(n = (2.576^2 * 0.5 * (1 - 0.5)) / 0.04^2\)

n = 664.92

Therefore, we need a sample size of at least 665 drivers to estimate the proportion of all drivers exceeding the legal speed limit on the certain stretch of road between Los Angeles and Bakersfield with a margin of error of 0.04 and a 99% confidence level.

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Answer:

C, B, A

Step-by-step explanation:

Who ever is reading this:

I love u.

U matter.

The world needs u

hang in there ik it may be bad but u deserve the world <3

ur beautiful no matter ur shape, size, color, gender.. anything

don't give up bby i need u to live.

i wish i could take everyones problems so yall wouldn't have to have em but i cant so just know ily and if anyone needs to talk u can talk to me

Pls pass this on. Everyone deserves to know this. ♥️♥️

just copy and paste its not hard pls this could save someones life

Answer:

its false

Step-by-step explanation:

The scalar line integral ∫ c (3x y) ds, where c is the line segment from (−1,3) to (4,2) is equal to 78√26/5

To evaluate the scalar line integral ∫ c (3x y) ds, where c is the line segment from (−1,3) to (4,2), we first need to parameterize the curve c.

Let t be the parameter such that

x = -1 + 5t,

y = 3 - t,

for 0 ≤ t ≤ 1.

The length of the curve c is given by the integral ∫ c ds, which can be calculated using the formula ∫ a to b \(√(dx/dt)^2 + (dy/dt)^2\) dt. Plugging in the values from the parameterization, we get

\(∫ c ds = ∫ 0 to 1 √(5^2 + (-1)^2) dt = ∫ 0 to 1 √26 dt = √26.\)

Using the parameterization, we can now write the integral as

\(∫ c (3x y) ds = ∫ 0 to 1 (3(-1+5t)(3-t)) √(5^2 + (-1)^2) dt = 78√26/5.\)

Therefore, the scalar line integral ∫ c (3x y) ds, where c is the line segment from (−1,3) to (4,2) is equal to 78√26/5.

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The scalar line integral ∫ c (3x y) ds, where c is the line segment from (−1,3) to (4,2), is approximately equal to

22.229.

We can do this by letting x = t and y = 3 - t/2, where -1 ≤ t ≤ 4.

Then, we can find ds/dt using the formula \(ds/dt = \sqrt{(dx/dt^2 + dy/dt^2)}\), which simplifies to

\(ds/dt = \sqrt{(1 + 1/4) } = \sqrt{(5)/2} .\)

Next, we can substitute x and y in terms of t into the integrand and simplify to get:

\(3x y = 3t(3 - t/2) = 9t - (3/2)t^2\)

Now, we can evaluate the integral by integrating with respect to t from -1 to 4:

\(\int c (3x y) ds = ∫ from -1 to 4 (9t - (3/2)t^2) (\sqrt{(5)/2)}  dt\)

\(= (\sqrt{(5)/2)}  [ (9t^2/2) - (3/8)t^3 ] evaluated from -1 to 4\)

\(= (\sqrt{(5)/2)}  [ (81/2) - (243/8) - (-27/8) + (3/8) ]\)

\(= \sqrt{(5)/2)}  [ (189/8) ]\)

= 22.229
Therefore, the scalar line integral ∫ c (3x y) ds, where c is the line segment from (−1,3) to (4,2), is approximately equal to

22.229.

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The properties of the mean and median to determine which

are the correct mean and median for the following histogram. The answer is Mean is 3.5; median is 3.1.

Mean

\(\mu=& \varepsilon x \cdot P(x)\)

= 0(0.04)+1(0.08)+2(0.125)+3(0.24) +4(0.15)+5(0.14)+6(0.12)+7(0.05)

= 0+0.08+0.25+0.72+0.6+0.7+0.72+0.35

= 3.42 [Approx: 3.5]

Mean =3.5 of median 3.1.

A data set's mean (average) is calculated by summing all of the numbers in the set, then dividing by the total number of values in the set. When a data collection is ranked from least to greatest, the median is the midpoint. The number that appears most frequently in a data collection is called the mode.

The median is computed by sorting the scores into numerical order, dividing the total by 2, rounding the result up if the number of scores is odd to determine the median position, or by averaging the median position and the position after it, if the number of scores is even.

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The equation that relates M to R is M = 13 - R

From the question, we have the following parameters:

The total number of new magazines is the sum of the number of magazines read and the number of magazines left

This is represented as

Total number of new magazines = Number of magazines read + Number of magazines left

Substitute the known values in the above equation

13 = R +M

Make M the subject

M = 13 - R

Hence, the equation is M = 13 - R

See attachment for the graph

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The probability that between 13 and 14.4 ounces are dispensed in a cup is approximately 0.3815 or 38.15%.

To find the probability that between 13 and 14.4 ounces are dispensed in a cup, we need to first standardize the values using the formula:

z = (x - μ) / σ Where x is the value we want to find the probability for, μ is the mean, and σ is the standard deviation.

For x = 13, we get: z = (13 - 13.5) / 3.5 = -0.14 For x = 14.4, we get: z = (14.4 - 13.5) / 3.5 = 0.26

We can then use a standard normal distribution table or a calculator to find the probability of the values falling between these two z-scores. Using a calculator, we can find: P(-0.14 < z < 0.26) = 0.3815

Therefore, the probability that between 13 and 14.4 ounces are dispensed in a cup is approximately 0.3815 or 38.15%.

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Given:

Required:

We need to solve the given inequality.

Explanation:

Consider the given equation.

Divide both sides of the inequality by (-7) and reverse the inequality because dividing by the neative number.

Final answer:

Answer:

They saved $10.49

Step-by-step explanation:

.12 X 87.43 = 10.4916

10.4916 rounded up is 10.49

To minimize the total area of an equilateral triangle and square, the side length of the square should be 2.167 and the side length of the triangle should be 3.833.

To find the dimensions that minimize the total area, we can set up equations based on the given information. Let's denote the side length of the square as 's' and the side length of the equilateral triangle as 't'. The perimeter of the square is 4s, and the perimeter of the equilateral triangle is 3t. Given that the combined perimeter is 13, we have the equation 4s + 3t = 13.

To minimize the total area, we need to consider the formulas for the areas of the square and equilateral triangle. The area of the square is given by A_square = \(s^2\), and the area of the equilateral triangle is given by A_triangle = (\(\sqrt{(3)}\)/4) *\(t^2\).

To find the values that minimize the total area, we can substitute s = (13 - 3t)/4 into the equation for A_square and solve for t. By finding the derivative of the total area with respect to t and setting it equal to zero, we can find the value of t that minimizes the area.

Similarly, to find the dimensions that maximize the total area, we follow the same process but this time maximize the total area by finding the value of t that maximizes the area.

Performing the calculations, we find that to minimize the total area, the side length of the square is approximately 2.167 and the side length of the triangle is approximately 3.833. To maximize the total area, the side length of the square is approximately 4.333 and the side length of the triangle is approximately 1.667.

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Answer:

C

Step-by-step explanation:

the graph goes up, indicating a positive correlation

Answer:

that is going to be c bc there is no correction between popcorn and soda

Answer:

I'm not really into firm design lol I don't even know what that is, I like graphic designs like patterns and stuff.

Step-by-step explanation:

Answer:

AC I'm pretty sure sorry if I'm wrong

Answer:

Kidneys,nephrons

Step-by-step explanation:

True -  the statement says that a basic variable corresponds to a pivot column in the coefficient matrix. From the definition of basic variables, basic variables correspond to the columns that have a leading 1's (pivot columns).

A mathematical system model based on the use of a linear operator is known as a "linear system" in systems theory. In contrast to nonlinear cases, linear systems often display considerably simpler traits and attributes.

In linear systems, the variables are really only multiplied with constants and then added together; they are never multiplied by each other. In order to express both static and dynamic relationships between variables, linear systems are used.

Something relating to a line is linear. To build a line, all of the linear equations are used. Any equation that doesn't result in a straight line is considered as non. It has a variable slope value and appears as a curve on a graph.

A linear system is one in which both the superposition and homogeneity principles hold true.

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