# Question

A sample of 28 student scores on the chemistry midterm exam is shown.

(a) At 5 .10, does the population median differ from 50? Make a worksheet in Excel for your calculations.

(b) Make a histogram of the data. Would you be justified in using a parametric t test that assumes normality? Explain.

(a) At 5 .10, does the population median differ from 50? Make a worksheet in Excel for your calculations.

(b) Make a histogram of the data. Would you be justified in using a parametric t test that assumes normality? Explain.

## Answer to relevant Questions

Final exam scores for a sample of 20 students in a managerial accounting class are shown. (a) At α = .05, is there a difference in the population median scores on the two exams? Make an Excel worksheet for your Wilcoxon ...(a) What determines sampling frequency? (b) Why are variable samples often small? (c) Why are attribute samples often large? Time (in seconds) to serve an early-morning customer at a fast-food restaurant is normally distributed. Set up a control chart for the mean serving time, assuming that serving times were sampled in random subgroups of 4 ...Find the Cp and Cpk indexes for a process with μ = 0.426, σ = 0.001, LSL = 0.423, USL = 0.432. How would you rate the capability of this process? Explain. A process has specification limits of LSL 5 540 and USL 5 550. The process standard deviation is 5 1.25. Find the Cp and Cpk capability indexes if (a) The process mean is 545; (b) The process mean is 543.Post your question

0