MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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In words, explain what is measured by SS, variance, and standard deviation.
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- A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What are the exam scores that separate the middle 10% of the class (5% on each side of the mean)?arrow_forwardA successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height converts to the z score 2.66. How many standard deviations in his height above the meanarrow_forwardCompare the mean, median, and mode in terms of their sensitivity to extreme scoresarrow_forward
- Consider the data: 10, 7, 9, 13, 11, 13, 14. (Show your work.) a)Determine the mean. b)Determine the standard deviation.arrow_forwardWhich statistic would you use if you are interested in comparing the mean number of hours worked by sex.arrow_forwardA large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What proportion of people scores in the A range (90 or above)?arrow_forward
- What is the relationship between the variance and the standard deviation for a sample data set? A. The standard deviation is equal to half the variance. B. The standard deviation is equal to two times the variance. C. The standard deviation is the square root of the variance. D. The standard deviation is the square of the variance.arrow_forwardA population has a Mean of 100 and a standard deviation of 15. A sample of 20 college students is measured and the Sample mean is 125. What is the standard error? Show the math.arrow_forwardThe Acme Company manufactures widgets. The distribution of widget weights is bell shaped. The widget have a mean of 40 ounces and a standard deviation of 10 ounces. What percentage of the widget weights lie between 20 and 70 ounces?arrow_forward
- Think of your own example of a data set that would follow a normal distribution and explain why.arrow_forwardAccording to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches. If Zsike is 67 inches tall, what is her z-score?arrow_forwardWhat is the standard error of the mean?arrow_forward
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