International Development homework help

QuestionAccording to a research study, college athletes slept 8 hours each night last year, on average. A random sample of 20college athletes was surveyed and the mean amount of time per night each athlete slept was 8.4. This data has a sample standard deviation of 0.9. (Assume that the scores are normally distributed.)Researchers conduct a one-mean hypothesis test at the 1% significance level, to test if the mean amount of time college athletes sleep per night is greater than the mean amount of time last year.(a)  H0:?=8; Ha:?>8, which is a right-tailed test.(b) Determine the test statistic, rounded to two decimal places.Provide your answer below: