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Use the Two-Proportions Z-Interval Procedure to Obtain the Required Confidence

Question 31

Multiple Choice

Use the two-proportions z-interval procedure to obtain the required confidence interval for the difference between twopopulation proportions. Assume that independent simple random samples have been selected from the two populations.
-A survey found that 28 of 69 randomly selected women and 41 of 78 randomly selected men follow a regular exercise program. Find a 95% confidence interval for the difference between the
Proportions of women and men who follow a regular exercise program.


A) -0.310 to 0.596
B) 0.215 to 0.596
C) 0.245 to 0.566
D) -0.280 to 0.040

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