A Major Electronics Store Chain Is Interested in Estimating the Average

question 55

Multiple Choice

A major electronics store chain is interested in estimating the average amount its credit card customers spent on their first visit to the chain's new store in the mall.Fifteen credit card accounts were randomly sampled and analyzed with the following results: $\bar { x }$ = $50.50 and s² = 400.A 95% confidence interval for the average amount the credit card customers spent on their first visit to the chain's new store in the mall is:

• A) $50.50 -$9.09.
• B) $50.50 - $10.12.
• C) $50.50 - $11.08.
• D) None of these choices.

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Definitions:

Motor Coordination

The ability of different parts of the body to work together smoothly and efficiently.

Psychoactive Drug

A substance that chemically alters the brain's activity, leading to changes in how one perceives, feels, is conscious of, thinks about, or acts upon things.

Biopsychosocial Approach

A holistic perspective that considers biological, psychological, and social factors and their complex interactions in understanding health, illness, and healthcare delivery.

Genetic Factors

Elements of an organism's genetic makeup that influence its characteristics and can be passed from one generation to the next.