12. Conference USA table-tennis coaches have a mean annualsalary (in dollars) of 33,000 and a standard deviation of 3,000. Ifnothing is known about the shape of the distribution, give aninterval that will contain the annual salaries of at least 15/16 ofthe coach's salaries.A. 30,000 to 36,000B. 27,000 to 39,000C. 24,000 to 42,000D. 21,000 to 45,00012esc888CP3434567deleteWwQRTUPtabADGKcaps lockreturnZCVBMshiftshiftcontroloptioncommandcommandoptionVCOLL2

Chebyshev’s Inequality:Suppose X is a random variable with mean μ and standard deviation σ. For a…

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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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A variable is normally distributed with mean 17 and standard deviation 8. Use your graphing calculator to find each of the following areas. Write your answers in decimal form. Round to the nearest thousandth as needed. a) Find the area to the left of 16. b) Find the area to the left of 13. c) Find the area to the right of 15. d) Find the area to the right of 19. e) Find the area between 13 and 28.
A variable is normally distributed with mean 15 and standard deviation 3. Use your graphing calculator to find each of the following areas. Write your answers in decimal form. Round to the nearest thousandth as needed. a) Find the area to the left of 14. b) Find the area to the left of 12. c) Find the area to the right of 13. d) Find the area to the right of 16. e) Find the area between 12 and 25. Question Help: D Post to forum Calculator Submit Question
Suppose the monthly salary of persons living in a community is normally distributed with mean $2000 and standard deviation of $500. Between what range would you find approximately 95% of persons in this community earning? Select one: a. $1500-2000 b. $1000-$2000 c. $1500-2500 d. $1000-$3000
The average height of 1,000 children is 150cm with a standard deviation of 10cm. How many children stand between 155cm and 150cm ? A. Find the raw score for z= -1,-2,-3,+1,+2,+3 B. Sketch the graph C. What z score corresponds to 50? D. What z score corresponds to 60? E. Find the total area . F. Multiply the total area by 1000. G. Make a conclusion.
What is the level of measurement of the variable “age”? A. IQR B. Range C. Median D. Ordinal E. Mode F. Nominal G. Mean H. Interval/Ratio I. IQV J. Standard deviation
A distribution of numbers is given by the following frequency histogram. Which of the following would be true? a. The mean would be greater than the median O b. The median would be greater than the mean C. The standard deviation would be less than 1 O d. The mean would be greater than the standard deviation
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%
1. Using a calculator, solve for the mean and the standard deviation of the given set of data. a. 15,18, 16, 17, 21 b. 21,24, 31, 19, 25 C. 84,85, 94, 76, 89 d. 54,66, 51, 37,49
Use the following Frequency table to calculate the standerd deviation. Class Frequency 2……4 4 5……7 6 8…….10 3 11…..13 2 14…..16 5
A firm makes MP3 players. The research department at this firm found that the life of the MP3 players is normally distributed with a mean of 4900 hours and a standard deviation of 450 hours. How many playing hours should a warranty cover if the firm wants 7% of the MP3 players to be below this amount? A. 5566 B. 4234 C. 4900 D. 1.48
Assume that a distribution has a mean of 26 and a standard deviation of 4. What percentage of the values in the distribution do we expect to fall between 26 and 34? Use the 68-95-99.7 rule. A. 5% B. 47.5% C. 25% D. 95%

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