Question

An increased number of colleges have been using online resources to research applicants According to a study from last year 30 of admissions cers indicated that they visited an applying students social networking page A random sample of 200 admissions oficers was recently selected and it was found that of them viste social networking sites of students applying to their college Using a 0.01 complete parts and below a. Does this sample provide support for the hypothesis that the proportion of admissions officers who visit an applying students social networking page has increased in the past year? Determine the nul and attematice hypotheses. Choose the correct answer below A HO D50 30 HD 033 Ho po HIPSO 35 OH D033 HD 033 HD 030

Answer 1

Given: n: 200 200 x = 79 x 79 ☆ 0.395 200 (0) He: p < 0.33 Hii 0.33 Test statistics ô - p z P(-p n 그 0.395 0.33 0.33 X 0.67 200 z - 0.065 0.033 1.97 p-value = P(Z >1:97) 0.0244 (from Z-table) since, p-value 20:01 We fail to reject Ho There is not sufficient evidence to conclude that the proportion of admissions Officers who visit an applying students social networking page has increased in the past year.