Perform the Required Chi-Square Hypothesis Test

Essay

Perform the required chi-square hypothesis test. Preliminary data analyses and other information indicate that it isreasonable to assume that the variable under consideration is normally distributed. Use the critical-value approach or theP-value approach as indicated.
-With individual lines at the checkouts, a store manager finds that the standard deviation for the waiting times on Monday mornings is 5.2 minutes. After switching to a single waiting line, he finds that for a random sample of 29 customers, the waiting times have a standard deviation of 4.6 minutes. Use a 0.025 significance level to test whether the standard deviation of the waiting times using a single line is less than 5.2 minutes. Use the critical-value approach.