5th Edition

ISBN: 9780321924599

Author: Mario F. Triola

Publisher: PEARSON

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Chapter 2.4, Problem 14BSC

Stemplots. In Exercises 13 and 14, construct the stemplot.

14. Car Braking Distances Refer to Data Set 14 in Appendix B and use the 21 braking distances (ft). Are there any outliers? Is there strong evidence suggesting that the data are not from a population having a normal distribution?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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Chapter 2.4, Problem 13BSC

Chapter 2.4, Problem 15BSC

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Stemplots. In Exercises 13 and 14, construct the stemplot. 14. Car Braking Distances Refer to Data Set 14 in Appendix B and use the 21 braking distances (ft). Are there any outliers? Is there strong evidence suggesting that the data are not from a population having a normal distribution ?

Solution Summary: The author explains that the data set represents the braking distances (ft) values.

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