Calcium Is an Essential Nutrient for Strong Bones and for Controlling

question 43

Multiple Choice

Calcium is an essential nutrient for strong bones and for controlling blood pressure and heart beat.Because most of the body's calcium is stored in bones and teeth,the body withdraws the calcium it needs from the bones.Over time,if more calcium is taken out of the bones than is put in,the result may be thin,weak bones.This is especially important for women who are often recommended a calcium supplement.A consumer group activist assumes that calcium content in two popular supplements are normally distributed with the same unknown population variance,and uses the following information obtained under independent sampling: Let μ₁ and μ₂ denote the corresponding population means.Can we conclude that the average calcium content of the two supplements differs at the 95% confidence level?

• A) No,because the 95% confidence interval contains the hypothesized value of zero.
• B) Yes,because the 95% confidence interval contains the hypothesized value of zero.
• C) No,because the 95% confidence interval does not contain the hypothesized value of zero.
• D) Yes,because the 95% confidence interval does not contain the hypothesized value of zero.

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Definitions:

Probability

An indicator of the probability of an event happening, represented numerically between 0 and 1.

Admissions Office

An admissions office is a department within educational institutions, such as colleges or universities, that manages the application and selection process for incoming students.

Deposits

Money placed into a bank account or a sum of money paid into a financial institution for safekeeping.

Normal Distribution

A bell-shaped distribution that is symmetric about the mean, describing how values of a variable are spread or dispersed.