Teachers' Salaries The average annual salary for all U.S. teachers is $47,750. Assume that the distribution is normal and thestandard deviation is $5680. Find the probabilities. Use a TI-83 Plus/TI-84 Plus calculator and round the answer to at least fourdecimal places.Part 1 of 2(a) A randomly selected teacher earns between $37,000 and $45,000 a year.P (37,000

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Answered: Teachers' Salaries The average annual…

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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QS- Entry to a certain University is determined by a national test. The scores on this test are normally distributed with a mean of 500 and a standard deviation of 100. Tom wants to be admitted to this university and he knows that he must score better than at least 70% of the students who took the test Tom takes the test and scores 585. Will he be admitted to this university? b-80.23% No a 80.23% Yes 72.4% Yes Q6- A company has 10 software engineers and fo 4 enginoore ha far 0.567 d-0.675 brity of races. e-0.776 are
Teachers' Salaries The average annual salary for all U.S. teachers is $47,750. Assume that the distribution is normal and the standard deviation is $5680. Find these probabilities of the earnings of a teacher selected randomly. Round the final answers to at east four decimal places and intermediate z value calculations to two decimal places. Part: 0 / 2 Part 1 of 2 #FF (a) Between $28,000 and $39,800 a year P (28,000
Teachers' Salaries The average annual salary for all U.S. teachers is $47,750. Assume that the distribution is normal and the standard deviation is $5680. Find the probabilities A randomly selected teacher earns more than $55,500 a year. P>X55,500 =
Monthly Mortgage Payments The average monthly mortgage payment including principal and interest is $982 in the United States. If the standard deviation is approximately $180 and the mortgage payments are approximately normally distributed, find the probabilities. Use a TI-83 Plus/TI-84 Plus calculator and round the answers to at least four decimal places. Part: 0/ 2 Part 1 of 2 (a) The selected monthly payment is more than $1175. P (X>1175) = O
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The data represents the murder rate per 100,000 individuals in a sample of selected cities in the United States. Find the variance and standard deviation. Round your answer to at least one decimal place. class limit Frequency 5-11 9 12-18 5 19-25 8 26-32 3 33-39 3 40-46 7
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The average amount of snow per season in Trafford is 45 inches. The standard deviation is 5 inches. Use a graphing calculator to find the probability that next year Trafford will receive the given amount of snowfall. Assume the random variable is normally distributed. Round your answers to 3 decimal places. Part: 0/2 Part 1 of 2 (a) Find the probability Trafford will receive at most 54 inches of snow. The probability that Trafford will receive at most 54 inches of snow is X
Forty families gathered for a fund-raising event. Suppose the individual contribution for each family is normally distributed with a mean and a standard deviation of $125 and $32, respectively. The organizers would call this event a success if the total contributions exceed $5,400. What is the probability that this fund-raising event is a success? (You may find it useful to reference the z table. Round final answer to 4 decimal places.) Probability
Doctoral Student Salaries Full-time Ph.D. students receive an average of $12,837 per year. If the average salaries are normally distributed with a standard deviation of $1500, find the probabilities. Use a TI-83 Plus/TI-84 Plus calculator and round the answer to at least four decimal places. Part: 0/ 2 Part 1 of 2 (a) The student makes more than S15.750. P(X>15.750) = %3D
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Hailey 05TFS072105 Commute Time to Work The average commute to work (one way) is 25 minutes according to the 2005 American Community Survey. If we assume that commuting times are normally distributed and that the standard deviation is 6.1 minutes, find the probabilities. Use a TI-83 Plus/TI-84 Plus calculator and round the answers to at least four decimal places. Part: 0 / 2 Part 1 of 2 (a) The selected commuter spends more than 36 minutes commuting one way. P(X>36)=| %3D Submit Assa Save For Later

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