Stats: Data and Models
Stats: Data and Models
5th Edition
ISBN: 9780135164013
Author: DeVeaux
Publisher: PEARSON CO
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Concept explainers

Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of tw…
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency o…
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow compar…
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Chapter 4, Problem 44E

a.

To determine

Draw the graph for the given data.

b.

To determine

Compare the average number of runs scored per game in the two leagues.

c.

To determine

Explain whether the number of runs scored is unusually high or not.

d.

To determine

Obtain a histogram of the differences and explain whether the actual difference in mean runs per game between the leagues in 2016 is different from that is expected when there is no difference.

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Chapter 4 Solutions

Stats: Data and Models

Ch. 4.1 - The Bureau of Transportation Statistics of the...Ch. 4.1 - The Bureau of Transportation Statistics of the...Ch. 4.1 - Prob. 3JCCh. 4 - Prob. 1ECh. 4 - Prob. 2ECh. 4 - 3. Fuel economy The boxplot shows the fuel economy...Ch. 4 - 4. Prisons 2014 In a way, boxplots are the...Ch. 4 - Load factors 2017 by month Here is a display of...Ch. 4 - Load factors 2017 by year Here is a display of the...Ch. 4 - Prob. 7E
Ch. 4 - Load factors 2017 by year again The box plots of...Ch. 4 - Prob. 9ECh. 4 - Load factors 2017 over time, a second look Here is...Ch. 4 - Prob. 11ECh. 4 - Prob. 12ECh. 4 - 15. Cost of living 2016, selected cities To help...Ch. 4 - Prob. 16ECh. 4 - 17. Rock concert deaths Crowd Management...Ch. 4 - Slalom times 2018 The Men’s Giant Slalom skiing...Ch. 4 - Prob. 19ECh. 4 - Prob. 20ECh. 4 - Prob. 21ECh. 4 - Prob. 22ECh. 4 - Prob. 23ECh. 4 - Prob. 24ECh. 4 - Prob. 25ECh. 4 - Prob. 26ECh. 4 - Prob. 27ECh. 4 - Prob. 28ECh. 4 - Prob. 29ECh. 4 - 30. Ozone Ozone levels (in parts per billion, ppb)...Ch. 4 - Prob. 31ECh. 4 - 32. Eye and hair color A survey of 1021 school-age...Ch. 4 - Prob. 33ECh. 4 - 34. Vineyards Here are summary statistics for the...Ch. 4 - 35. Caffeine A student study of the effects of...Ch. 4 - Prob. 36ECh. 4 - Prob. 37ECh. 4 - Prob. 38ECh. 4 - Prob. 39ECh. 4 - Prob. 40ECh. 4 - Prob. 41ECh. 4 - Prob. 42ECh. 4 - Prob. 43ECh. 4 - Prob. 44ECh. 4 - Prob. 45ECh. 4 - Prob. 46ECh. 4 - Prob. 47ECh. 4 - 48. Rainmakers The table lists the amounts of...Ch. 4 - Prob. 49ECh. 4 - Prob. 50ECh. 4 - Prob. 51ECh. 4 - Prob. 52ECh. 4 - 13. Pizza prices by city (Data in Pizza prices)...
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