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Chapter 12: Q.18 (page 521)

Hospitals (number 18). Please see Problems 15-17.

a. What proportion of hospitals are under private ownership?

a. How many psychiatric hospitals are owned by a private company?

d. What percentage of hospitals are mental health facilities?

d. How many of the institutions under private ownership are psychiatric hospitals?

Short Answer

Expert verified

The height of the bars varies.

Step by step solution

01

Given Information

a. Explanation: In Figure 2.7, the dot plot indicates the dollar costs of DVD players. Each dot here reflects the cost of a DVD player. In addition, the number of dots above the same prices denotes its frequency. Furthermore, in a single-value class histogram, the frequency represents the bar height. As a result, a single-value class is the same as a dot plot.

02

Definition

b. Explanation: Except for single-value classes, the dot plot and a frequency histogram are not interchangeable. Single values may combine in a cut point or a class grouping histogram, resulting in a change in the corresponding frequencies. As a result, the height of the bars varies.

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Most popular questions from this chapter

Consider a variable of several populations. Define the terms homogeneous and nonhomogeneous in this context.

In each of exercises 12.57-12.59, use the technology of your choice to solve the specified problems.

The Scottish Executive, Analytical Services Division Transport Statistics, compiles information on motorcycle accidents in Scotland. During one year, data on the number of motorcycle accidents, by day of the week and type of road (built-up or non built-up), are as presented on the WeissStats CD.
a. Group the bivariate data for these two variables into a contingency table.
b. Determine the conditional distribution of day of the week within each type-of-road category and the marginal distribution of day of the week.
c. Determine the conditional distribution of type of road within each day of the week and the marginal distribution of type of road.
d. Does an association exist between the variables "day of the week" and "type of road" for these motorcycle accidents? Explain your answer.

Suppose that you have bivariate data for an entire population.

a. How would you decide whether an association exists between the two variables under consideration?

b. Assuming that you make no calculation mistakes, could your conclusion be in error? Explain your answer.

For a χ2-curve with df=10, determine

a. χ0.052

b.χ0.025

Education of Prisoners. In the article "Education and Correctional Populations" (Bureau of Justice Statistics Special Report, NCJ 195670), C. Harlow examined the educational attainment of prisoners by type of prison facility. The following contingency table was adapted from Table 1 of the article. Frequencies are in thousands, rounded to the nearest hundred.


StateFederalLocalTotal
8th grade or less149.910.666.0226.5
some high school269.112.9168.2450.2
GED300.820.171.0391.9
High school diploma216.424.0130.4370.8
Postsecondary95.014.051.9160.9
College grad and more25.37.216.148.6
Total1056.588.8503.61648.9

How many prisoners

a. are in state facilities?

b. have at least a college education?

c. are in federal facilities and have at most an 8th-grade education?

d. are in federal facilities or have at most an 8th-grade education? e. in local facilities have a postsecondary educational attainment

f. who have a postsecondary educational attainment are in local facilities?

g. are not in federal facilities?
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