Question

A "sleep habits" survey answered by 25 randomly selected New Yorkers contained the question "How much sleep do you get per night?" The sample average was 7.68 hours, with a corresponding sample standard deviation of 0.8 hours. Conduct a hypothesis test to see if there is evidence that New Yorkers (who live, after all, in "the city that never sleeps") on average get less than 8 hours of sleep per night, using a=0.05. a. The t test statistic is: Round your answer to 3 decimal places b. What is probability that we would obtain a test statistic at least this extreme if the population mean sleep time for New Yorkers was not less than 8 hours per night? Hint: the phrasing of this question is based on the definition of a particular statistic. Round your answer to 3 decimal places dence to suggest that New Yorkers on average get less than 8 hours of sleep per c. Using a level of significance of 0.05, the dati V ---Select--- night. provides statistically significant You have one attempt for this question, so you does does not provide statistically significant s correct before submitting an answer to this. Submit Answer Save Progress Practice Another Version |

Answer 1

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