More time on the Internet: A researcher polled a sample of 1092 adults in the year 2010, asking them how many hours perweek they spent on the Internet. The sample mean was 9.39 with a standard deviation of 13.30. A second sample of 1040 adultswas taken in the year 2012. For this sample, the mean was 10.55 with a standard deviation of 14.56. Assume these are simplerandom samples from populations of adults. Can you conclude that the mean number of hours per week spent on the Internetincreased between 2010 and 2012? Let l, denote the mean number of hours spent on the Internet in 2010 and u, denote themean number of hours spent on the Internet in 2012. Use the a =0.10 level and the P-value method with the table.Part: 0/ 6Part 1 of 6State the appropriate null and alternate hypotheses.H:O

Answered: Image /qna-images/answer/12f8bc0a-9edf-4218-8947-f524c167603b.jpg

Answered: More time ôh thế Internet: A researcher…

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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According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches. If Zsike is 67 inches tall, what is her z-score?
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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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