A). A quality inspector is worrying about the defective produced in the production process. He wants to test that the average defectives produced are 145 or less.He collects a sample of 25 production runs and found that a sample mean of 150 defectives were produced with a std deviation of 20.With this information he wishes to perform a hypothesis test at 5% significance level.

The decision is to?

The t-test statistic is?

She will set up the hypothesis as?

B). A quality inspector is worrying about the defective produced in the production process. He wants to test that the average defectives produced are 145 or less.He collects a sample of 25 production runs and found that a sample mean of 150 defectives were produced with a std deviation of 20.With this information he wishes to perform a hypothesis test at 5% significance level.

The{"version":"1.1","math":"t_{\alpha, n-1} \text { or } t_{\alpha/2, n-1}"}(you have to decide which one of these is to be used in this question - this will depend whether you set up the hypothesis as one-tailed or two-tailed.) value to be considered for decision is: