The table below shows relative frequency distribution for 50 employees working in a small construction company classified according to their years of experience, the approximate value * :of variance is Years of Relative Frequency of experience Employees 5-10 0.3 11-16 0.4 17-22 0.2 23-28 0.1

Q: The grade point average of students at a university is normally distributed, with a mean of 2.6 and…

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Q: 2. A recent study indicates that the annual cost of maintaining and repairing a car in New Orleans…

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Q: 2. Over the past week, I measured the resting heartrates of 24 women ages 30 - 50 and got the…

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A: We have given that.    X~N( μ , ?^2 )    μ = 5.1      , ? = 1.8   Z-score =( x - μ )/?

Q: The mean lifetime of 200 mobile phones in a sample is 1,000 hours and their standard deviation  is…

A: The provided information is,  n=200 µ=1200 x¯=1000σ=130α=0.01

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Q: How to determine the appropriate tool when the variance is known, variance is unknown and when the…

A: Solution-: How to determine the appropriate tool when the variance is known, variance is unknown and…

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Q: Let us suppose we have data on the absorbency of paper towels that were produced by two different…

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Q: The operations manager of SSS Rubber Company is investigating the ages in months of the company's…

A: lower limit upper limit x f fx (x-xbar)^2 f(x-xbar)^2   18 20 19 4 76 46.24 184.96     21 23 22…

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Q: Suppose that vehicle speeds at an interstate location have a normal distribution with a mean equal…

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Q: What percentage the male population is between 72 and 76 inches in height?

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Q: Suppose the total weight of passengers and luggage on an airline flight is normally distributed…

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Q: A random sample of 18 light bulbs is drawn from a normally distributed population. The population…

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