Assume that people playing World of Warcraft in a week has a normal distribution with a mean of 54 hours and a standard deviation of 11 hours. Find the probability that a randomly selected person played more than 89 hours. Interpret the result. (For full credit need to draw the curve and shade the area)

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A:

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Q: Lin 24 -3 A -1 100 --- -4 |||| 3 4 LA

A: Here the given graph is

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A:

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Q: What information about the skewness of the data can be inferred from your previous answers?

A: Data given Class Frequency 1.5 - 2 8 2 - 2.5 28 2.5 - 3 17 3 - 3.5 7

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A:

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A: Let X = the number of ants per acre in the forest. Given that, Mean (μ) = 43,000 sd (σ) = 12,274

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Q: - Save & Exit Certify Lesson: 10.2 Hypothesis Testing for Popula... Question 4 of 8, Step 3 of 3…

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Q: A normal distribution has a mean of μ = 58 and a standard deviation of σ = 12.   Standard Normal…

A: Given,mean(μ)=58standard deviation(σ)=12

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A: Let =C and =C/2 Total number of cars = 140 sold by each salesperson

Q: Choose the appropriate unbiased estimate for each parameter. the population mean the population…

A: Sol:-

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A: We have given that Mean(µ) = 264Standard deviations (σ) = 39

Q: x Question 4 4.8000 is wrong For a uniform random variable U~ U(2, 10), find 0.35: 10.35 4.8000…

A: Sol:-

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A: GivenA random variable x~Uniform(a=10,b=16)f(x)=1b-a    ; a<x<bf(x)=116-10    ;…

Q: .Given the following hypotheses: H0: μ = 410 H1: μ ≠ 410 A random sample of 19 observations is…

A: given data n = 19x¯ =418s = 5α = 0.05claim : μ = 410

Q: A data set is summarized in the frequency table below. The data set contains a total of 50 data…

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Q: A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He…

A: Sample size (n) = 20Sample mean (x̅) = 29Standard deviations (s) = 7Confidence level (c) = 99% =…