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Time in bankruptcy. Refer to the Financial Management (Spring 1995) study of pre-packaged bankruptcy filings, Exercise 2.32 (p. 86). Recall that each of 49 firms that negotiated a reorganization plan with its creditors prior to filing for bankruptcy was classified in one of three categories: joint exchange offers with prepack, prepack solicitation only, and no prefiling vote held. Consider the quantitative variable length of time in bankruptcy (months) saved in the accompanying file. Is it reasonable to use a single number (e.g., mean or median) to describe the center of the time-in-bankruptcy distributions? Or should three "centers" be calculated, one for each of the three categories of prepack firms? Explain

Short Answer

Expert verified

The mean is 2.6546, or the median is 1.5

Step by step solution

01

Reasonable to use a single number of mean or median

As a result, three sorts of plans were investigated:

That is, a "joint" exchange offer accompanied by a pre-packaged bankruptcy request.

"Prepack" refers to solely pre-packaged bankruptcy solicitation.

"None" means there was no pre-filing vote. The information for the 49 businesses is shown in the table below.

\(\begin{aligned}{\rm{Mean for joint}} &= \frac{{\sum\limits_{i = 1}^n {{x_i}} }}{n}\\ &= \frac{{29.2}}{{11}}\\ &= 2.6546\end{aligned}\)

First, they must arrange the data in ascending order.

\({\rm{ }}\;1.2,{\rm{ }}1.2,1.4,{\rm{ }}1.4,{\rm{ }}1.4,{\rm{ }}1.5,{\rm{ }}2.1,{\rm{ }}3.9,{\rm{ }}4.5,{\rm{ }}5.2,{\rm{ }}5.4.\)

\(\begin{aligned}{\rm{\;Median}} &= {\rm{The middle value\; \; \; \; \; \; \; }}\\ &= 1.5\end{aligned}\)

The mean time for 鈥淛oint exchange offers with pre-pack鈥 enterprises is 2.6545 months, while the median duration is 1.5 months. Therefore, the average duration spent in bankruptcy for 鈥渏oint鈥 enterprises is 2.6545 months, whereas half of the businesses are in bankruptcy for 1.5 months or less.

02

Three categories of pre-pack firms

a) Those who have not pre-registered to vote.

b) Those who vote for a collaborative solution.

c) Those who voted for pre-packaged food

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Most popular questions from this chapter

Using only integers between 0 and 10, construct two data sets with at least 10 observations each so that the two sets have the same mean but different variances. Construct dot plots for each of your data sets and mark the mean of each data set on its dot diagram.

Answer the following questions about the variability of data sets:

a.What is the primary disadvantage of using the range to compare the variability of data sets?

b.Describe the sample variance using words rather than a formula. Do the same with the population variance.

c.Can the variance of a data set ever be negative? Explain. Can the variance ever be smaller than the standard deviation? Explain.

Blue- vs. red-colored exam study. In a study of how external clues influence performance, university professors gave two different forms of a midterm examination to a large group of introductory students. The questions on the exam were identical and in the same order, but one exam was printed on blue paper and the other on red paper (Teaching Psychology, May 1998). Grading only the difficult questions on the exam, the researchers found that scores on the blue exam had a distribution with a mean of 53% and a standard deviation of 15%, while scores on the red exam had a distribution with a mean of 39% and a standard deviation of 12%. (Assume that both distributions are approximately mound-shaped and symmetric.)

a. Give an interpretation of the standard deviation for the students who took the blue exam.

b. Give an interpretation of the standard deviation for the students who took the red exam.

c. Suppose a student is selected at random from the group of students who participated in the study and the student鈥檚 score on the difficult questions is 20%. Which exam form is the student more likely to have taken, the blue or the red exam? Explain.

Active nuclear power plants.Refer to Exercise 2.54 (p. 98) and the Nuclear Energy Institute鈥檚 data on the number of nuclear power plants operating in each of 30 states.

a.Find the range, variance, and standard deviation of this data set.

b.Eliminate the largest value from the data set and repeat part a.What effect does dropping this measurement have on the measures of variation found in part a?

c.Eliminate the smallest and largest value from the data set and repeat part a. What effect does dropping both of these measurements have on the measures of variation found in part a?

State

Status

Number of Power Plants

Alabama

Regulated

2

Arizona

Regulated

1

Arkansas

Regulated

1

California

Regulated

1

Connecticut

Deregulated

1

Florida

Regulated

3

Georgia

Regulated

2

Illinois

Deregulated

6

Iowa

Deregulated

1

Kansas

Regulated

1

Louisiana

Regulated

2

Maryland

Deregulated

1

Massachusetts

Deregulated

1

Michigan

Deregulated

3

Minnesota

Regulated

2

Mississippi

Regulated

1

Missouri

Regulated

1

Nebraska

Regulated

2

New Hampshire

Deregulated

1

New Jersey

Deregulated

3

New York

Deregulated

4

North Carolina

Regulated

3

Ohio

Deregulated

2

Pennsylvania

Deregulated

5

South Carolina

Regulated

4

Tennessee

Regulated

2

Texas

Deregulated

2

Virginia

Regulated

2

Washington

Regulated

1

Wisconsin

Deregulated

1

Made-to-order delivery times.Refer to the data on delivery times for a made-to-order product, Exercise 2.34 (p. 87). The delivery times (in days) for a sample of 25 orders are repeated in the accompanying table. (Times marked by an asterisk are associated with customers who subsequently placed additional orders with the company.) Identify any unusual observations (outliers) in the data set, and then use the results to comment on the claim that repeat customers tend to have shorter delivery times than one-time customers.

50* 64* 56* 43* 64* 82* 65* 49* 32* 63* 44* 71 54* 51* 102 49* 73* 50* 39* 86 33* 95 59* 51* 68

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