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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola
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POTUS The accompanying graph is a histogram of ages of

Chapter 6, Problem 4CRE

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QUESTION:

POTUS The accompanying graph is a histogram of ages of U.S. presidents at the time they were inaugurated (from Data Set 12 in Appendix B).

a. Identify two features of the vertical scale that cause the graph to be somewhat misleading.

b. Does the histogram appear to show data from a population having a normal distribution? Explain.

c. From the graph, identify the lowest and highest possible ages, then use the range rule of thumb to estimate the standard deviation of the ages. How does the result compare to the standard deviaton of 6.6 years calculated from the original list of sample values?

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QUESTION:

POTUS The accompanying graph is a histogram of ages of U.S. presidents at the time they were inaugurated (from Data Set 12 in Appendix B).

a. Identify two features of the vertical scale that cause the graph to be somewhat misleading.

b. Does the histogram appear to show data from a population having a normal distribution? Explain.

c. From the graph, identify the lowest and highest possible ages, then use the range rule of thumb to estimate the standard deviation of the ages. How does the result compare to the standard deviaton of 6.6 years calculated from the original list of sample values?

ANSWER:

Problem 4CRE

Answer:

Step1 of 3:

We have The accompanying graph is a histogram of ages of U.S. presidents at the time they were inaugurated (from Data Set 12).

Step2 of 3:

a.

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