a health report claim that the mean BMI of student in a school , Academiais 24.97

tommy suspected the actual mean BMI is less than what the report claimed and conducted a hypothesis test to check the report claim.

he collected the BMI data from a sample of 40 student from the Academia

the population standard deviation is unknown.

he obtained a sample mean of 22.06 and the sample standard deviation of 9 .

help tommy conduct a suitable hypothesis test at 2% level of significance.

a) state any assumption used for the test

b) state the null and alternative hypothesis

c) sketch the distribution of sample means with meaningful values , to support your conclusion of the hypothesis test

d) determined the conclusion of the hypothesis test