A Professor Collected Data to Determine Whether the Share of Her

Multiple Choice

A professor collected data to determine whether the share of her students who passed her course differed across her morning, afternoon, and evening classes.Samples of her recent students provided the following information: She set up the following hypotheses test to determine whether the pass rate differs across meeting times.
H₀: $\pi$ ₁ = $\pi$ ₂ = $\pi$ ₃ (the population proportions are equal)
H_A: At least two population proportions differ from one another.
At a 1% significance level, what is the test statistic, $\chi$ ²_stat, for the hypothesis test?

A) 1.904
B) 2.173
C) 4.197
D) 5.991