Question

Conduct and Interpret a One-Mean Hypothesis Test Using the Critical Approach With an Unknown Standard Deviation Question According to a research study, college athletes slept 7.9 hours each night last year, on average. A random sample of 19 college athletes was surveyed and the mean amount of time per night each athlete slept was 8.2. This data has a sample standard deviation of0.8. (Assume that the scores are normally distributed.) Researchers conduct a one-mean hypothesis test at the 10% significance level, to test if the mean amount of time college athletes sleep per night is different than the mean amount of time last year (a) Ho 7.9; H 7.9, which is a two-tailed test. (b) to 1.63 (c) Eto.0s=+1.734 (d) Which of the following are appropriate conclusions for this hypothesis test? Select all that apply Select all that apply: We should reject Ho We should not reject Ho At the 10% significance level, the data provide sufficient evidence to conclude that the amount of time college athletes sleep per night is different from 7.9 hours. At the 10% significance level, the data do not provide sufficient evidence to conclude that the amount of time college athletes sleep per night is different from 7.9 hours.

Answer 1

d) Since t statistic is between critical values, we should not reject Ho and there is not sufficient evidence. Hence,

Option B and Option D are correct.