Multiple Choice Please circle the correct answer to the question below. Rachel h

Question

Multiple Choice Please circle the correct answer to the question below.

Rachel has collected data on the heart rates of 28 members of the sports club where she works as a personal trainer. She has decided to calculate the 95% confidence interval for the mean heart rate of all members of that sports club. She plots a modified box plot of the data set and sees that the heart rate of one member is a low outlier. How would you advise Rachel regarding the appropriate type of analysis for this dataset?

A. It is appropriate to use the t procedure since the distribution of the data deviates only slightly from a Normal distribution.

B.  It is appropriate to use the t procedures because the data are Normally distributed.

C. Neither a t nor a z procedure would be appropriate

D. It is not appropriate to use the t procedure. A z procedure would be appropriate.

Explanation / Answer

Since only 1 of the data is a low outlier, and the sample size is 28 (very close to 30), therefore Option A. It is appropriate to use the t procedure since the distribution of the data deviates only slightly from a Normal distribution.

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