2. The lengths (in feet) of a random sample of suspensionbridges in the United States, Europe, and Asia are shown. Ata 0.05, is there sufficient evidence to conclude that there is adifference in mean lengths?United StatesEuropeAsia42605238652935004626454323004347366820003300337918502874

Answered: Image /qna-images/answer/9dc8ae1a-f58b-4319-8732-d82721390208.jpg

Answered: 2. The lengths (in feet) of a random…

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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The data represent the 2011 salaries of basketball coaches of the following universities, entered in that order: Arizona, Butler, Connecticut, Florida, Kansas, Kentucky, North .Carolina, and Virginia Commonwealth Compute the range, variance, and standard .deviation for these data 1950 434 2300 3575 3376 3800 1655 418
Listed below are heights in inches of fathers and their first sons. Father Son Difference 1. Complete the table and find the differences 2. Use a 5% level of significance to test the claim there is no difference in heights between fathers and first sons. 72 73 66 68 Sample Data 69 68 70 71 70 70 70 70 70 71 75 71 68 70
. Advertising expenses are a significant component of the cost of goods sold. Listed below is a frequency distribution showing the advertising expenditures for 60 manufacturing companies located in the Southwest. Estimate the mean and the standard deviation of advertising expenses. Advertising Expenditure Number of ($ millions) Companies 25 up to 35 5 35 up to 45 10 45 up to 55 21 55 up to 65 16 65 up to 75 8 Total 60
Just d
The NIH wants to compare the mean weight loss for five different diets. They measure the weight loss (in pounds) of 5 women assigned to each of the diets for one month. The resulting data set is below. Pounds Diet 2.2 1 0.3 1 0.6 1 1.9 1 -1.2 1 0.1 2 -1.1 2 -1.2 2 1.1 2 2.7 2 1 3 -0.4 3 -0.2 3 0.1 3 -2 3 -2.8 4 -0.1 4 -1.1 4 -1.8 4 -2.9 4 -1.2 5 -1.2 5 -1.7 5 -0.9 5 -1.2 5 a) What is the F statistic for the ANOVA? b) Using a 0.01 level of significance, what is the critical point that one would compare to the F statistic in order to make a conclusion? c) What is the P-value from the ANOVA?
A simple random sample of 10 UE students were taken to estimate the mean (μ) weekly allowance of all UE students. The data are: 500 550 600 1000 675 450 500 650 800 825 1. Construct a 95% C.I. on μ and interpret. 2. Construct a 99% C.I. on μ and interpret.
According to the Carnegie unit system, the recommended number of hours students should study per unit is 2. Are statistics students' study hours less than the recommended number of hours per unit? The data show the results of a survey of 13 statistics students who were asked how many hours per unit they studied. Assume a normal distribution for the population. 0.7, 1.8, 1, 0.6, 3, 0.9, 0.9, 1, 3.2, 1.5, 0.1, 0.1, 3.2 What can be concluded at the αα = 0.10 level of significance? The test statistic = ___________ (please show your answer to 3 decimal places.) The p-value = ____________ (Please show your answer to 4 decimal places.)
Do males and females at University spend the same amount of time, on average, at the Fitness center? Below are the given data: a = 0.05 (hint: assuming the groups have a common variance).Women n1 = 1563, 32, 86, 53, 4973, 39, 56, 45, 6749, 51, 65, 54, 56 Men n2 = 15 52, 75, 74, 68, 9377, 41, 87, 72, 5384, 65, 66, 69, 62
(b) Calculate the mean, median mode and standard deviation for the following data: 4600- 4800 75 4800- 5000 5000- 5200 5200- 5400 50 4000- 4400- Class size 4200 22 4200- 4400 38 4600 Freque 65 80 70
4. Use Descriptive Statistic tool on the Data Analysis to find the following: d. Standard Deviation е. Variance f. Range g. Skewness Table: 88 62 63 88 65 85 83 76 72 63 60 46 85 71 67 75 78 87 70 42 63 90 63 60 73 55 62 62 83 79 78 40 51 56 80 90 47 48 54 77 86 55 76 52 76 40 52 72 43 60
A random sample of 12 students showed the following time (in hours) of sleep 4.5 5 5.5 6 6 7 7.5 7.5 8 9 5 7 What is the best point estimate of the population mean?
1. A researcher plans to conduct a survey among students in a public high school. If the population of thisschool is 5,000, find the sample size and the percentage from the N population. (Margin of error is 5%)A = {9,10,11,7,13}B = {10,10,10,10,10}C = {1,1,10,19,19}a. Calculate the mean of each data set.b. Calculate the standard deviation of each data set.c. Which set has the largest standard deviation?

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