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:

Members

Individuals who belong to a group, organization, or team, sharing common goals or interests.

Mobilizing Departments

The act of organizing and preparing various departmental units within an organization for a coordinated action or effort.

Formal Meetings

Structured gatherings with defined agendas, rules, and objectives, often in a professional setting.

Unification

The process of making or becoming united, integrated, or whole, often used in the context of merging groups or entities.