Assuming that the population variances are equal, construct a 95% confidence interval estimate of the difference μ1−μ2 between the mean amount of potato chips eaten by the children who watched thecelebrity-endorsed commercial and children who watched the alternative food snack commercial. ≤μ1−μ2≤ (Type integers or decimals rounded to two decimal places as needed.) The mean amount of chips eaten by children that watch the commercial featuring the celebrity is between 3.34 and 16.66 grams more than the children that don't. since the interval is > 0, the decision to reject Ho is valid... Based on the results of (a) and (b) if you wanted to increase the consumption of this brand of potato chips, which commercial would you choose? A. Choose the commercial with the celebrity endorser since there is evidence that the mean amount of potato chips eaten was significantly lower for children who watched the celebrity-endorsed commercial. B. Choose the commercial without the celebrity endorser since there is evidence that the mean amount of potato chips eaten was significantly lower for children who watched the celebrity-endorsed commercial. C. Choose the commercial with the celebrity endorser since there is evidence that the mean amount of potato chips eaten was significantly higher for children who watched the celebrity-endorsed commercial. D. Choose the commercial without the celebrity endorser since there is evidence that the mean amount of potato chips eaten was significantly higher for children who watched the celebrity-endorsed commercial.

Name: A recent study found that 62 children who watched a commercial for pot
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Description: A recent study found that 62 children who watched a commercial for potato chips featuring a celebrity endorser ate a mean of 39 grams of potato chips as compared to a mean of 25 grams for 52 children who watched a commercial for an alternative food s

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A recent study found that 62 children who watched a commercial for potato chips featuring a celebrity endorser ate a mean of 39 grams of potato chips as compared to a mean of 25 grams for 52 children who watched a commercial for an alternative food snack. Suppose that the sample standard deviation for the children who watched the celebrity-endorsed commercial was 21.4 grams and the sample standard deviation for the children who watched the alternative food snack commercial was 12.9 grams.

Assuming that the population variances are equal, construct a

95% confidence interval estimate of the difference μ1−μ2 between the mean amount of potato chips eaten by the children who watched thecelebrity-endorsed commercial and children who watched the alternative food snack commercial.

__ ≤μ1−μ2≤ __

(Type integers or decimals rounded to two decimal places as needed.)

The mean amount of chips eaten by children that watch the commercial featuring the celebrity is between 3.34 and 16.66 grams more than the children that don't. since the interval is > 0, the decision to reject Ho is valid...

Based on the results of (a) and (b) if you wanted to increase the consumption of this brand of potato chips, which commercial would you choose?

A. Choose the commercial with the celebrity endorser since there is evidence that the mean amount of potato chips eaten was significantly lower for children who watched the celebrity-endorsed commercial.

B. Choose the commercial without the celebrity endorser since there is evidence that the mean amount of potato chips eaten was significantly lower for children who watched the celebrity-endorsed commercial.

C. Choose the commercial with the celebrity endorser since there is evidence that the mean amount of potato chips eaten was significantly higher for children who watched the celebrity-endorsed commercial.

D. Choose the commercial without the celebrity endorser since there is evidence that the mean amount of potato chips eaten was significantly higher for children who watched the celebrity-endorsed commercial.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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