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

---

Definitions:

Loan

Money borrowed that is expected to be repaid with interest.

Compounded Annually

Interest calculation method where the interest is added to the principal sum once a year, so each year’s interest earnings are based on the principal plus the accumulated interest.

RRSP Contributions

Money placed into a Registered Retirement Savings Plan, intended to serve as retirement savings and provide tax benefits in Canada.

First Contribution

The initial investment or deposit made into a financial instrument or savings account.