Question

In a sample of 100 households, the mean number of hours spent on social networking sites during the month of January was 50 hours. In a much larger study, the standard deviation was determined to be 6 hours. Assume the population standard deviation is the same. What is the 98% confidence interval for the mean hours devoted to social networking in January?

Answer 1

@EclipsedStar can you help

Answer 2

@ganeshie8 can you help

Answer 3

@pooja195 ???