Use the Following Information for Questions:
a Random Sample $\alpha$

Short Answer

Use the following information for questions:
A random sample of 850 high school girls showed that 400 had done strenuous exercise over the past year. The researcher wants to test the hypotheses below for p = the proportion of all high school girls who do strenuous exercise.
H₀: p ≥ 0.50
H_a: p < 0.50
-Are the results statistically significant at a significance level of $\alpha$ = 0.05?