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Chapter 7: Q.3.3 (page 426)

3. Describe the shape of the

The histogram above left shows the intervals (in minutes) between eruptions of the Old Faithful geyser for all 222recorded eruptions during a particular month. For this population, the median is 75minutes. We used Fathom software to take500SRSs of size 10from the population. The 500values of the sample median are displayed in the histogram above right. The mean of the 500sample median values is 73.5.

Sampling distribution. Explain what this means in terms of overestimating or underestimating the population median

Short Answer

Expert verified

The distribution is unimodal and skewed to the left.

Step by step solution

01

Given Information

Median is75.

Sample size is20.

Mean is73.5

02

Explanation

The figure is

From the figures given above, it is clear that most of the data points are lying on the left side of the graph and it has one peak. Thus, it could be said that the distribution is unimodal and skewed to the left.

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Most popular questions from this chapter

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