Question

8. Previous studies on sleep tendencies report that, on average, an adult American will sleep for 6 hours each night with a standard deviation of 0.75 hours. You survey a SRS of 100 adult Americans and determine that the mean sleep time is 5 hours. Which Hypothesis Test should be used here? a. One-sample t-test for means b. One-sample z-test for means c. One sample z-test for proportions d. One sample t-test for proportions e. Chi-squared goodness of fittest 9. Previous studies on sleep tendencies report that 65% of adult Americans do not get the recommended amount of nightly sleep. You survey a SRS of 100 adult Americans and determine that 78% do not get the recommended amount of nightly sleep. Which Hypothesis Test should be used here? a One-sample t-test for means b. One-sample 2-test for means c. One sample z-test for proportions d. One sample t-test for proportions c. Chi-squared goodness of fittest 10. A previous study on sleep tendencies report that 15% of adult Americans are significantly sleep deprived, 35% are sleep deprived, 25% sleep an appropriate amount, 15% oversleep a slight amount, and 10% significantly oversleep. To confirm these results, you survey a SRS of 100 adult Americans to and find that 28 are significantly sleep deprived, 42 are sleep deprived, 21 get an appropriate amount of sleep, 7 oversleep, and 2 sleep excessively too much. Which Hypothesis Test should be used here? a. One-sample t-test for means b. One-sample z-test for means c. One sample z-lest for proportions d. One sample t-test for proportions e. Chi-squared goodness of fittest

Answer 1

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