A Researcher Believes a New Diet Should Improve Weight Gain $\alpha$

question 41

Multiple Choice

A researcher believes a new diet should improve weight gain. To test his hypothesis a random sample of 10 people on the old diet and an independent random sample of 10 people on the new diet were selected. The selected people on the old diet gain an average of 5 pounds with a standard deviation of 2 pounds, while the average gain for selected people on the new diet was 8 pounds with a standard deviation of 1.5 pounds. Assume that the values are normally distributed in each population and that the population variances are approximately equal. Using $\alpha$ = 0.05, the observed t value for this test is ___.

• A) -1.96
• B) -1.645
• C) -2.100
• D) -3.79
• E) -1.734

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Definitions:

Cash Flow Statement

A financial statement that shows the flow of cash in and out of a business during a specific period, highlighting operating, investing, and financing activities.

Accumulated Depreciation

The cumulative total of all depreciation charges applied to an asset from the time it was first used.

Common Stock

Equity ownership in a corporation, giving shareholders voting rights and a share in the company's profits through dividends and capital appreciation.

Depreciation Expense

The portion of the cost of a fixed asset that is systematically allocated as an expense to each period that the asset is used and generates revenue.