Question

A group 125 of Internet users 50-65 years of age were randomly chosen and asked to report the weekly number of hours they spend online. The purpose of the study was to determine whether the mean weekly number of hours that Internet users in that age group spend online differs from the mean for Internet users in general, which is 12.5 (as reported by "The Digital The following information is available: and average mean weekly hrs spent online for this group was 12 hrs, with a sample standard deviation of 3.2 hrs. Does this sample provide enough evidence that that Internet users in that age group spend online differs from the mean for Internet users in general, which is 12.5 hrs? Show all the work: state Hypotheses, alfa, test statistic, tales, t or z distribution?(explain your choice), P-value, and the final conclusion addressed to the claim to be verified.

Answer 1