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Get Full Access to Mathematical Statistics With Applications - 7 Edition - Chapter 1 - Problem 15e
Get Full Access to Mathematical Statistics With Applications - 7 Edition - Chapter 1 - Problem 15e

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# Refer to Exercise 1.4 and repeat parts (a) and (b) of

ISBN: 9780495110811 47

## Solution for problem 15E Chapter 1

Mathematical Statistics with Applications | 7th Edition

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Problem 15E

Problem 15E

Refer to Exercise 1.4 and repeat parts (a) and (b) of Exercise 1.13.

Reference

The top 40 stocks on the over-the-counter (OTC) market, ranked by percentage of outstanding shares traded on one day last year are as follows:

a Construct a relative frequency histogram to describe these data.

b What proportion of these top 40 stocks traded more than 4% of the outstanding shares?

c If one of the stocks is selected at random from the 40 for which the preceding data were taken, what is the probability that it will have traded fewer than5%of its outstanding shares?

Refer to Exercise 1.2.

a Calculate  and s for the data given.

b Calculate the interval  ± ks for k = 1, 2, and 3. Count the number of measurements that fall within each interval and compare this result with the number that you would expect according to the empirical rule.

Reference

Are some cities more windy than others? Does Chicago deserve to be nicknamed “The Windy City”? Given below are the average wind speeds (in miles per hour) for 45 selected U.S. cities:

Source: The World Almanac and Book of Facts, 2004.

a Construct a relative frequency histogram for these data. (Choose the class boundaries without including the value 35.1 in the range of values.)

b The value 35.1 was recorded at Mt. Washington, New Hampshire. Does the geography of that city explain the magnitude of its average wind speed?

c The average wind speed for Chicago is 10.3 miles per hour. What percentage of the cities have average wind speeds in excess of Chicago’s?

d Do you think that Chicago is unusually windy?

Step-by-Step Solution:

Step 1 of 2:

(a)

In this question, we are asked to find the sample mean  and sample variance  for the data given.

The top  stocks on the over-the-counter market, ranked by percentage of outstanding shares traded on one day last year are as follows:

 Stocks Traded Ordered Stocks Square of Stocks 11.88 2.61 6.8121 6.27 2.62 6.8644 5.49 2.63 6.9169 4.81 2.68 7.1824 4.4 2.69 7.2361 3.78 2.74 7.5076 3.44 2.74 7.5076 3.11 2.88 8.2944 2.88 2.89 8.3521 2.68 2.99 8.9401 7.99 3.03 9.1809 6.07 3.11 9.6721 5.26 3.2 10.24 4.79 3.26 10.6276 4.05 3.36 11.2896 3.69 3.44 11.8336 3.36 3.48 12.1104 3.03 3.62 13.1044 2.74 3.69 13.6161 2.63 3.78 14.2884 7.15 3.93 15.4449 5.98 3.94 15.5236 5.07 4.05 16.4025 4.55 4.4 19.36 3.94 4.43 19.6249 3.62 4.55 20.7025 3.26 4.79 22.9441 2.99 4.81
Step 2 of 1

##### ISBN: 9780495110811

This textbook survival guide was created for the textbook: Mathematical Statistics with Applications , edition: 7. This full solution covers the following key subjects: average, Chicago, wind, data, exercise. This expansive textbook survival guide covers 32 chapters, and 3350 solutions. Since the solution to 15E from 1 chapter was answered, more than 504 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 15E from chapter: 1 was answered by , our top Statistics solution expert on 07/18/17, 08:07AM. The answer to “Refer to Exercise 1.4 and repeat parts (a) and (b) of Exercise 1.13.ReferenceThe top 40 stocks on the over-the-counter (OTC) market, ranked by percentage of outstanding shares traded on one day last year are as follows: a Construct a relative frequency histogram to describe these data.b What proportion of these top 40 stocks traded more than 4% of the outstanding shares?c If one of the stocks is selected at random from the 40 for which the preceding data were taken, what is the probability that it will have traded fewer than5%of its outstanding shares?Refer to Exercise 1.2.a Calculate and s for the data given.b Calculate the interval ± ks for k = 1, 2, and 3. Count the number of measurements that fall within each interval and compare this result with the number that you would expect according to the empirical rule.ReferenceAre some cities more windy than others? Does Chicago deserve to be nicknamed “The Windy City”? Given below are the average wind speeds (in miles per hour) for 45 selected U.S. cities: Source: The World Almanac and Book of Facts, 2004.a Construct a relative frequency histogram for these data. (Choose the class boundaries without including the value 35.1 in the range of values.)b The value 35.1 was recorded at Mt. Washington, New Hampshire. Does the geography of that city explain the magnitude of its average wind speed?c The average wind speed for Chicago is 10.3 miles per hour. What percentage of the cities have average wind speeds in excess of Chicago’s?d Do you think that Chicago is unusually windy?” is broken down into a number of easy to follow steps, and 260 words. Mathematical Statistics with Applications was written by and is associated to the ISBN: 9780495110811.

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