Discuss the below:
Q. A social scientist claims that, on average, adults watch less than 26 hours of television per week. Data are collected on the television-viewing habits of 25 randomly selected individuals. This sample indicates that the mean number of hours per week of watching television for an individual is 22.4 hours.
a) formulate a suitable null and alternative hypothesis for testing the claim
b) If the population standard deviation is known to be 8 hrs, can it be concluded at the 1 % significance level, that the social scientist is right?