An official of a large national union claims that the fraction of women in the union is not significantly different from one-half. Using the critical value approach and the sample information reported below, carry out a test of this statement. Let ? = .05.
sample size400
women168
men232
What will be an ideal response?
H0: p = .5Ha: p? .5 Reject H0 because test statistic z = -3.2 < -1.96
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