A Survey Claims That 9 Out of 10 Doctors (I

question 37

Multiple Choice

A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z for their patients who have children. Totest this claim against the alternative that the actual proportion of doctors who recommend brand Z is less than90%, a random sample of 100 doctors results in 83 who indicate that they recommend brand Z. The test statisticin this problem is approximately (round to the nearest hundredth) :

• A) -2.33
• B) 2.33
• C) -1.83
• D) -1.99

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Definitions:

Simplify

The act of simplifying a math expression or equation to its most basic version.

Like Terms

Like terms are terms in an algebraic expression that have the same variables raised to the same power, which can be combined by adding or subtracting their coefficients.

Compound Growth

The process where the value of an investment increases exponentially over time due to earning interest on both the initial principal and the accumulated interest.

Evaluate

To assess or determine the value, significance, or condition of something through careful examination and analysis.