# Question

Refer to Exercise 3.99.

In exercise

Chebychev’s rule also permits you to make pertinent statements about a data set when only its mean and standard deviation are known. Here is an example of that use of Chebychev’s rule. Information Today, Inc. publishes information on costs of new books in The Bowker Annual Library and Book Trade Almanac. A sample of 40 sociology books has a mean cost of $106.75 and a standard deviation of $10.42. Use this information and the two aforementioned special cases of Chebychev’s rule to complete the following statements.

Assuming that the distribution of costs for the 40 sociology books is approximately bell shaped, apply the empirical rule to complete the following statements, and compare your answers to those obtained in Exercise 3.99, where Chebychev's rule was used.

a. Approximately 38 of the 40 sociology books cost between ______and ______.

b. Approximately of the 40 sociology books cost between $75.49 and $138.01.

In exercise

Chebychev’s rule also permits you to make pertinent statements about a data set when only its mean and standard deviation are known. Here is an example of that use of Chebychev’s rule. Information Today, Inc. publishes information on costs of new books in The Bowker Annual Library and Book Trade Almanac. A sample of 40 sociology books has a mean cost of $106.75 and a standard deviation of $10.42. Use this information and the two aforementioned special cases of Chebychev’s rule to complete the following statements.

Assuming that the distribution of costs for the 40 sociology books is approximately bell shaped, apply the empirical rule to complete the following statements, and compare your answers to those obtained in Exercise 3.99, where Chebychev's rule was used.

a. Approximately 38 of the 40 sociology books cost between ______and ______.

b. Approximately of the 40 sociology books cost between $75.49 and $138.01.

## Answer to relevant Questions

1, 2, 4, 4 We have provided simple data sets for you to practice the basics of finding measures of center. For each data set, determine the a. Mean. b. Median. c. Mode(s). 1, 2, 3, 4, 5 a. Obtain the quartiles. b. Determine the interquartile range. c. Find the five-number summary. Wayne Gretzky, a retired professional hockey player, played 20 seasons in the National Hockey League (NHL), from 1980 through 1999. S. Berry explored some of Gretzky’s accomplishments in “A Statistician Reads the Sports ...In the paper "The Smoking Cessation Efficacy of Varying Doses of Nicotine Patch Delivery Systems 4 to 5 Years Post-Quit Day" (Preventative Medicine, 28, pp. 113-118), D. Daughton et al. discussed the long-term effectiveness ...From the Recording Industry Association of AmericaWeb site, we obtained data on the number of albums sold, in millions, for the top recording artists (U.S. sales only) as of November 6, 2008. Those data are provided on the ...Post your question

0