In Order to Construct a 95% Confidence Interval Estimate for the Difference

question 139

Multiple Choice

In order to construct a 95% confidence interval estimate for the difference between the means of two normally distributed populations, where the unknown population variances are assumed not to be equal, the following summary statistics were computed from two independent samples: , , , , , and . In this case, what is the upper confidence limit?

• A) 6.78
• B) 18.78
• C) 77.3
• D) 89.3

---

Definitions:

Misredemption

The act of consumers using coupons, vouchers, or offers in ways not intended by the issuer, leading to financial losses or unintended benefits.

Clearinghouse Costs

Expenses associated with the operation of a clearinghouse, which facilitates the exchange and settlement of financial or commodity transactions.

Redemption

The act of exchanging something, such as a coupon or voucher, for a product, service, or financial benefit.

Sweepstakes

A type of contest or promotion where prizes are given away at random, often used as a marketing tool to engage consumers.