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.
-The standard deviation of math test scores at one high school is 16.1. The standard deviation of the math scores of a random sample of 22 girls was 12. Use a significance level of 0.01 to test whether the standard deviation, Ϭ, of the girls' test scores is smaller than 16.1. Use the critical-value approach.