In: Statistics and Probability
Please evaluate the question with every detail step and explanation.
(No computer output is accepted) The following data present the running time of several films produced by two companies (A and B) Company Time (minutes) A 102 86 78 109 92 B 81 165 97 89 92 80 114
a) The film producer suggests that the mean running time of all films produced by company A is less than 85 minutes. Test this claim, make a decision and interpret your result when significance level is 1%.
b) The film producer suggests that the mean running time of all films produced by company B is greater than 65 minutes. Test this claim, make a decision and interpret your result when significance level is 1%.