The following table presents the scores of students in Statistics examinationScoresFrequency30-39240-496.50-596060 - 6914070-7918480-8913590 -9978What does the standard deviation say aboutthe scores of the students?Select the correct response:99.7% of the boys have an averagedifference of about 1495% of the boys have an averagedifference of about 1468% of the boys have an averagedifference of about 12The score the students differ byabout 12

Answered: The following table presents the scores…

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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5. Let X denote the diameter of an armored electric cable and Y denote the diameter of the ceramic mold that makes the cable. Both X and Y are scaled so that they range between 0 and 1. Suppose that X and Y have the joint density Find P(X+Y>¹). f(x): { = 0
Consider the following data: −9,13,−14,−14,−9,−14,−9−9,13,−14,−14,−9,−14,−9 Copy Data Step 2 of 3: Calculate the value of the sample standard deviation. Round your answer to one decimal place.
In the Social Psychology course, you receive a score of 77 on the second exam. You are told that the standard deviation of the second exam is 8 and that your score is .75 standard deviations below the mean. a. What is the class mean of the second exam? b. Your friend scored a 70 on the second exam. How many standard deviations below the mean is your friend’s score?
Recently, a random sample of 25–34 year olds was asked, "How much do you currently have in savings, not including retirement savings?" The data in the table represent the responses to the survey. Approximate the mean and standard deviation amount of savings. Click the icon to view the frequency distribution for the amount of savings. Frequency distribution of amount of savings Savings $0-$199 $200-$399 $400-$599 $600–$799 $800–$999 $1000-$1199 $1200-$1399 Frequency 344 89 46 25 11 4
The grades for 30 students on the most recent exam are given in the data table below: Round your answer to 2 decimal places as needed 70 70 80 80 70 60 90 80 80 80 60 70 70 70 70 90 70 70 80 90 60 90 70 60 90 70 06 90 90 80 What is the mean score for the exam? What is the median score for the exam? What is the standard deviation for the exam?
The table below gives the number of hours spent watching TV last week by a sample of 24 children. 83 49 57 34 55 78 43 53 69 22 23 50 20 80 70 22 26 22 31 30 51 79 93 19 Range = Standard Deviation = Round your answers to the nearest hundredth as needed.
A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
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
The table below gives the number of hours spent watching TV last week by a sample of 24 children. 31 28 60 63 33 75 73 87 46 82 70 50 47 50 39 83 25 73 33 74 87 85 97 12 Range = Standard Deviation =
A successful basketball player has a height of 6 feet 3 inches, or 191 cm. Based on statistics from a data set, his height converts to the z score of 2.31. How many standard deviations is his height above the mean?
A successful basketball player has a height of 6 feet 4 inches, or 193 cm. Based on statistics from a data set, his height converts to the z score of 2.66. How many standard deviations is his height above the mean?
A researcher randomly purchases several different kits of a popular building toy. The following table shows the number of pieces in each kit in the sample. Find the mean, the median and the standard deviation of the data. Round your answer to the nearest hundredth, if necessary. 16. Building Toy Pieces 151 36 256 341 341 36 95 287 256 100 161 199

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