Test Hypotheses About a Population Proportion
-A Survey Claims That $90 \%$

question 95

Multiple Choice

Test Hypotheses about a Population Proportion
-A survey claims that 9 out of 10 doctors (i.e., $90 \%$ ) recommend brand $Z$ for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand $Z$ is less than $90 \%$ , a random sample of 100 doctors results in 85 who indicate that they recommend brand $Z$ . The test statistic in this problem is approximately:

• A) \(- 1.67\)
• B) \(1.67\)
• C) \(- 1.17\)
• D) \(- 1.33\)

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Definitions:

Triplet Repeat

A sequence of three nucleotides in DNA that is repeated multiple times in a row, which can lead to genetic disorders if the number of repeats exceeds a normal range.

Inborn Errors

Genetic disorders resulting from a defect in an enzyme, leading to metabolic problems.

Metabolism

The set of life-sustaining chemical reactions in organisms for converting food into energy.

Aneuploidies

Chromosomal abnormalities where the number of chromosomes in a cell is not an exact multiple of the haploid set, leading to genetic disorders or variations.