We Intend to Estimate the Average Driving Time of a Group

question 64

Multiple Choice

We intend to estimate the average driving time of a group of commuters. From a previous study, we believe that the average time is 42 minutes with a standard deviation of 12 minutes. We want our 98 percent confidence interval to have a margin of error of no more than plus or minus 3 minutes. What is the smallest sample size that we should consider?

• A) 87
• B) 10
• C) 8
• D) 261

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Definitions:

Gonads

Glands responsible for producing sex hormones and gametes, playing a crucial role in reproductive health and behavior.

Adrenal Glands

Small glands located on top of each kidney that produce hormones such as adrenaline and cortisol, which help regulate metabolism, immune system, blood pressure, and stress responses.

Pineal Gland

A small endocrine gland in the brain that produces melatonin, regulating sleep and wake patterns.

Pituitary Gland

A small endocrine gland located at the base of the brain that produces hormones regulating growth, metabolism, and reproductive functions.