For Questions 4 - 8: Heights (or lengths) of adult animals tend to have distributions that are well described by normal distributions. The distribution of heights of 25-34 year old females (U.S. Bureau of the Census, 1992) can be approximated by N(63.5", 2.5").

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Answered: For Questions 4-8: Heights (or lengths)…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. In the following data pairs, A represents the cost of living index for utilities and B represents the cost of living index for transportation. The data are paired by metropolitan areas in the United States. A random sample of 46 metropolitan areas gave the following information.
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. In the following data pairs, A represents the cost of living index for utilities and B represents the cost of living index for transportation. The data are paired by metropolitan areas in the United States. A random sample of 46 metropolitan areas gave the following information. Do the data indicate that the U.S. population mean cost of living index for utilities is less than that for transportation in these areas? Use α = 0.05. (Let d = A − B.) (a) What is the level of significance? (b)What is the value of the sample test statistic? (Round your answer to three decimal places.)
The monthly salaries of a sample of 500 employees were rounded to the nearest R10 rand notes. They ranged from a low of R2999 to a high of R4250. If we want to condense the data into ten class intervals, what is the most convenient class width (rounded off to zero decimals)? ⒸA. 50 B. 10 C. 125 D. 90
The depths (in inches) at which 10 artifacts are found are listed. Complete parts (a) and (b) below. 37.9 26.4 32.1 28.4 46.7 27.7 36.5 31.9 24.8 25.2 D (a) Find the range of the data set. Range = (Round to the nearest tenth as needed.) (b) Change 46.7 to 51.3 and find the range of the new data set. Range= (Round to the nearest tenth as needed.)
Which of the following variables is under interval level of measurement? a. ADNU entrance exam results b. nicotine content (in milligrams) of Hithit Cigarettes c. annual income of teachers d. years in which Liberal Party won the presidential elections
The depths (in inches) at which 10 artifacts are found are listed. Complete parts (a) and (b) below. 25.5 41.5 35.9 38.8 45.3 36.7 23.1 31.2 36.6 30.7 O (a) Find the range of the data set. Range = (Round to the nearest tenth as needed.) (b) Change 45.3 to 54.5 and find the range of the new data set. Range =O (Round to the nearest tenth as needed.)
Given the following histogram for a set of data, how many values in the data set are greater than 10.5 but less than 12.5? A histogram has a horizontal axis labeled Values from 7.5 to 16.5 in increments of 1 and a vertical axis labeled Frequency from 0 to 6 in increments of 1. The histogram has vertical bars of width 1, starting at the horizontal axis value of 7.5. The approximate heights of the bars are as follows, where the horizontal axis label is listed first and the approximate height is listed second: 7.5, 1; 8.5, 2; 9.5, 3; 10.5, 2; 11.5, 3; 12.5, 4; 13.5, 1; 14.5, 5; 15.5, 6.
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer.In the following data pairs, A represents birth rate and B represents death rate per 1000 resident population. The data are paired by counties in the Midwest. A random sample of 16 counties gave the following information. A: 12.5 13.2 12.6 12.1 11.4 11.1 14.2 15.1 B: 9.6 14.3 10.7 14.2 13.2 12.9 10.9 10.0 A: 12.5 12.3 13.1 15.8 10.3 12.7 11.1 15.7 B: 14.1 13.6 9.1 10.2 17.9 11.8 7.0 9.2

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For Questions 4-8: Heights (or lengths) of adult animals tend to have distributions that are well described by normal distributions. The distribution of heights of 25-34 year old females (U.S. Bureau of the Census, 1992) can be approximate by N(63.5",2.5").