MATH 533 Week 3 Quiz

$15.00

Contributor

Mike Mentzer

Category

Mathematices

Course

MATH 533 Applied Managerial Statistics

Institute

DeVry

Pages

6

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Given a random variable X follows a Normal distribution with mean 10 and standard deviati 0.6827 Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. 99.8 A normal distribution is defined by two parameters, the mean and the Standard Deviation If for a certain x value in a normal distribution with mean equal to 4 the z-value is such that Larger than 4 Suppose X is normally distributed with mean 50 and standard deviation 4. Find the probabili 0.9876 Suppose X is normally distributed with mean 20 and standard deviation 4, find the value x0 12.16 According to an NRF survey conducted by BIGresearch, the average family spends about $23 They spend less than $145 on back-to-college electronics? They spend more than $340 on back-to-college electronics? They spend between $135 and $175 on back-to-college electronics? According to the Air Transport Association of America, the average operating cost of an MD At what operating cost would only 20% of the operating costs be less? At what operating cost would 65% of the operating costs be more? What operating cost would be more than 85% of operating costs? In a recent year, the average daily circulation of the Wall Street Journal was 2,276,207. Sup On what percentage of days would ci

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