11. The owner of a large car dealership believes that the finandial crisis decreased the number ofcustomers visiting her dealership. The dealership has historically had 800 austomers per day.The owner takes a sample of 100 days and finds the average number of customers visitingthe dealership per day was 750. Assume that the population standard deviation is350. Thevalue of the test statistic isA. Z=-1.429B. t99 =-1.429C. z 1.429D. tog 1.42912. The Institute of Education Sciences measures the high school dropout rate as the percentageof 16- through 24-year-olds who are not enrolled in school and have not earned a high schoolcredential. Last year, the high school dropout rate was8,1%. A polling company recently tooka survey of 1,000 people between the ages of 16 and 24 and found that 6.5% of them arehigh school dropouts, The polling company would like to determine whether the dropout ratehas decreased. At a 5% significance level, the decision is toA. reject Ho, we can conclude that the high school dropout rate has decreasedB. reject Ho, we cannot conclude that the high school dropout rate has decreasedC. do not reject Ho, we can condude that the high school dropout rate has decreasedD. do not reject Ho, we cannot conclude that the high school dropout rate hasdecreased13. An advertisement for a popular weight-loss dinic suggests that participants in its new dietprogram lose, on average, more than 10 pounds. A consumer activist decides to test theauthenticity of the claim. She follows the progress of 18 women who recently joined theweight-reduction program. She calculates the mean weight loss of these participants as 10.8pounds with a standard deviation of 2.4 pounds. The test statistic for this hypothesis wouldbeA. 1.41B. -1,41C. 1.74D. -1.74

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11. The owner of a large car dealership believes that the financial crisis decreased the number of customers visiting her dealership. The dealership has historically had 800 austomers per day. The owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750. Assume that the population standard deviation is350. The value of the test statistic is A. z -1.429 B. t99 =-1.429 C. z 1.429 D. t99 1.429

11. The owner of a large car dealership believes that the financial crisis decreased the number of customers visiting her dealership. The dealership has historically had 800 austomers per day. The owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750. Assume that the population standard deviation is350. The value of the test statistic is A. z -1.429 B. t99 =-1.429 C. z 1.429 D. t99 1.429

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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