Marked out of 50.00 P Flag question Inference on the mean of a normal population, variance known. According to manageria

[answerhappygod]

Marked Out Of 50 00 P Flag Question Inference On The Mean Of A Normal Population Variance Known According To Manageria 1 (74.42 KiB) Viewed 33 times

Marked out of 50.00 P Flag question Inference on the mean of a normal population, variance known. According to managerial requirements, the mean dispatch time in an industrial subprocess should be exactly equal to 15 min. An engineer uses a random sample of n = 21 dispatch time measurements to test whether the managerial requirement is met or not. The sample mean dispatch time is found to be = 16.3 min. It is assumed that dispatch time has a normal distribution with known variance o = 2.9 (min) (a) State the null and the alternative hypotheses of the test. [10 points) (b) Calculate the observed value of the Z-statistic, Zo, in the sample. [10 points) (c) State the rejection criterion for a fixed level test (the critical value approach) with a=0.05. [10 points) (d) Calculate the p-value ("observed significance level") of the test. [10 points) (e) What is the conclusion of the test in the context of the problem? [10 points)