MATH 1281 Statistic Inference Graded Quiz Unit 3

Graded Quiz Unit 3 A case study that deals with the effect of prior reputation on the evaluation of an instructor is presented in Question 11.1 in the book (Section 11.5). Students were exposed to e ither one of two conditions, C and P, and were asked to rate a lecture given by the instructor. It was found that the average rating among the 25 students that were exposed to condition C was 2.613 and the average rating among the 24 students that were exposed to condition P was 2.236. The sample standard deviations were 0.533 and 0.543, respectively. Quesion 1 Correct Mark 1.00 out of 1.00 Flag question You want to construct a confidence interval for the expected rating of students that were exposed to condition P. The confidence level of the interval should be 80%. The quantile of the t-distribution that should be used for the construction is: (Assume a Normal distribution for the rating) Select one: a. qt(0.85,23) b. qt(0.925,24) c. qt(0.90,23) Home  My courses  MATH 1281 - AY2021-T4  22 April - 28 April  Graded Quiz Unit 3  Graded Quiz Unit 3: Attempt review