QUESTION 15In a random sample of 7 college students, the mean number of hours per week they exercise was 5.9. Suppose an additional student is added to thesample with exercising time of 11 hours. Find the sample mean for all 8 students. (Rounded your answer to one decimal place)QUESTION 16Meera surveyed 140 ZU female students to investigate the amount of time spent on Youtube per day. The standard deviation of the times was 12.3minutes. What is the variance of the times? Round your answer to one decimal place.151.3

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Answered: QUESTION 15 In a random sample of 7…

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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The distances golf balls travel under laboratory testing conditions are normally distributed. The mean is 313 yards. The probability the golf ball travels further than 322 yards is 0.13. Find the probability a randomly selected golf ball travels between 304 yards and 322 yards. Express the answer as a decimal value rounded to the nearest hundredth.
Refer to the figure at the right. At a =0.10, can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes in 2000 was the same for men and women? AsSsume the survey included a random sample of 248 men and 244 women. Percentage of 18- to 24-year olds living in parents' homes 70,. 51.5% 41.2% 46.6% 44.3% 2000 2012 O Men Women Identify the null and alternative hypotheses. Choose the correct answer below. O A. H,: P, +P2 Ha: P1 = P2 O B. Ho: P, P2 c. Họ: P1 = P2 O D. Ho: P1 > P2 Ha: P, SP2 Ha: P1 #P2 Find the critical value(s). The critical value(s) is(are) +1.65 (Round to two decimal places as needed. Use a comma to separate answers as needed.) Find the standardized test statistic. z= 2.29 (Round to two decimal places as needed.) Can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes was the same for men and women in 2000? V, at the 10% significance level, there is evidence to the claim.
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Refer to the figure at the right. At a =0.10, can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes in 2000 was the same for men and women? Assume the survey included a random sample of 248 men and 244 women. Percentage of 18- to 24-year olds iving in parents' homes 7051.5% 41.2% 46.6% 44.3% 2000 2012 I Men I Women Identify the null and alternative hypotheses. Choose the correct answer below. O B. Ho: P1 P2 O D. Ho: P, > P2 Cc. Họ: P1 = P2 Ha: P, SP2 H3: P, *P2 Find the critical value(s). The critical value(s) is(are) +1.65. (Round to two decimal places as needed. Use a comma to separate answers as needed.) Find the standardized test statistic. z= 2.29 (Round to two decimal places as needed.) Can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes was the same for men and women in 2000? Yes , at the 10% significance level, there is sufficient evidence to support the claim.
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QUESTION 15 In a random sample of 7 college students, the mean number of hours per week they exercise was 5.9. Suppose an additional student is added to the sample with exercising time of 11 hours. Find the sample mean for all 8 students. (Rounded your answer to one decimal place)