Exhibit 9-9From a population of cans of coffee marked "12 ounces," a sample of 25 cans isselected and the contents of each can are weighed. The sample revealed a mean of11.8 ounces and a standard deviation of 0.5 ounces. We want to test to determinewhether or not the mean weight of all cans is significantly less than 12 ounces.3. Refer to Exhibit 9-9. The test statistic equals.5-2-.5

Answered: Image /qna-images/answer/a8245e2d-4e37-443a-8800-cb0e2e4c9823.jpg

Answered: From a population of cans of coffee…

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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You are performing a study about weekly per capita milk consumption. A previous study found weekly per capita milk consumption to be normally distributed, with a mean of 43.9 fluid ounces and a standard deviation of 10.8 fluid ounces. You randomly sample 30 people and record the weekly milk consumptions shown below. 34, 53, 30, 37, 39, 45, 27, 62, 33, 45, 41, 24, 37, 53, 40, 39, 39, 45, 46, 45, 33, 30, 21, 39, 61, 41, 47, 39, 53, 34 a) Using seven classes, draw a frequency histogram to display these data. b) Find the mean of your sample. Find the standard deviation of your sample. c) Compare the mean and standard deviation of your sample with those of the previous study. Discuss the differences.
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The average McDonald's restaurant generates $3.6 million in sales each year with a standard deviation of 0.9. Trent wants to know if the average sales generated by McDonald's restaurants in Kentucky is different than the worldwide average. He surveys 27 restaurants in Kentucky and finds the following data (in millions of dollars): 4.1, 2.8, 4.4, 4.5, 5.3, 5, 3.7, 2.9, 3.8, 4.8, 3.6, 2.3, 3.7, 2.9, 2.9, 4, 1.1, 5.2, 2.9, 5, 4, 4, 5.9, 3.2, 2.2, 4.3, 3.8 Perform a hypothesis test using a 3% level of significance. Step 1: State the null and alternative hypotheses. Ho: [? v] ? v На: ? ? v (So we will be performing a Select an answer test.) Step 2: Assuming the null hypothesis is true, determine the features of the distribution of point estimates using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are Select an answer v with distribution mean and distribution standard deviation Step 3: Find the p-value of the point estimate. P( ? v ? v = P( ? ♥ ?…
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