8(a) About what percent of those surveyed weighed more than 232lb?86%(b) About what percent of those surveyed weighed less than 178 lb?9(a). About what percent of those surveyed weighed more than 239lb?(b) If 100 men were surveyed, what is the total weight of all the men?10(a) What weight represent two standard deviations above the mean?b) What weight represent 1.8 standard deviations below the mean?Eighteen students in a math class were asked how many college cearned. Use the following data which was obtained from a study of weights of adult mento answer problems # 7, #8 , #9, and # 10.Mean 192 lbFirst quartile 178lbMedian 185lb Third quartile 232 lbMode 180 lb 86th percentile 239 lbStandard Deviation 23lbWhat weight did half of those

Mean is 192 lb.Median is 185 lb.Mode is 180 lb.First quartile is 178 lb.Third quartile is 232…

Answered: 8(a) About what percent of those…

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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2. The mean of a statistics examination is 77.0. a. If your score is 85, would you prefer the standard deviation to be large or small for purposes of getting a better grade? Why? b. If your score is 69, would you prefer the standard deviation to be large or small? Why?
4. What is the standard deviation of the data {7, 1, 7, 10, 5, 3, 2}? 5.0 2.7 3.0 9.0
Consider the data from the Anthropology 105 class. The mean for women is 64.33 in and the standard deviation is 2.64 in. The average height of men in the US is approximately 5ft 10in. What proportion of women represented here are shorter than the average man?
10. On a history exam, Roberto had a score of 72, which was exactly 3 standard deviations below the mean. The standard deviation for the exam is 4. a. What score was 2 standard deviations above the mean? b. What percent of the scores were at least 88? 72 c. What score represents the mean? d. What percent of the scores were between 80 and 88?
Which is NOT a correct statement about mean, median, standard deviation, or interquartile range? a. Mean is more affected by changes in extreme observations b. Median is less affected by changes in extreme observations c. Standard deviation is less affected by changes in extreme observations d. Interquartile range is less affected by changes in extreme observations
9a. For binomially distributed data set, approximately what proportion would be below the mean and also within one standard deviation? 16.5%,25%,33%,50%,66%

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