The Dean of a Major University Claims That the Mean $\mu \leq$

question 147

Multiple Choice

The dean of a major university claims that the mean time for students to earn a Masterʹs degree is at most 3.5 years. If a hypothesis test is performed, how should you interpret a decision that rejects the null hypothesis?

• A)There is sufficient evidence to reject the claim \(\mu \leq\) 3.5.
• B)There is not sufficient evidence to reject the claim \(\mu \leq\) 3.5.
• C)There is sufficient evidence to support the claim \(\mu \leq\) 3.5.
• D)There is not sufficient evidence to support the claim \[\mu \leq\] 3.5.

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Definitions:

Macroevolution

Large-scale evolutionary events over long time spans. Macroevolution results in phenotypic changes in populations that are significant enough to warrant their placement in taxonomic groups at the species level and higher. Compare with microevolution.

Adaptive Radiation

The rapid diversification of a single ancestor species into a wide variety of forms with different ecological niches.

Ancestral Species

A species from which two or more species evolved, serving as a common predecessor in the evolutionary tree.

Closely Related

Describes organisms or entities that share a recent common ancestor or have a high degree of genetic similarity, often within the same family or genus.