When engaging in weight control (fitness/fat burning) types of exercise, a person is expected to attain about 60% of their maximum heart rate. For 20-year-olds, this rate is approximately 120 bpm. A simple random sample of 100 20-year-olds was taken, and the sample mean was found to be 107 bpm with a standard deviation of 45 bpm. Researchers wonder if this is evidence to conclude that the expected level is actually lower than 120 bpm. To determine this, we test the following hypotheses OH:120, Ha: 120 Ο Η :μ = 120, H, :μ < 120 Ο Η:μ > 120, Ha:μ < 120 OH:120, Ha:μ = 120

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A: From the given output, Coefficient of C(1) is 0.001764, Coefficient of C(2) is 0.01346

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A: Here we have given the information, 61% of Americans believe most school textbooks favor political…

Q: Given the probability distribution below, find the missing value,y : x P(X=x) -97 0.041 53 y 87…

A: Given data is x P(X=x) -97 0.041 53 y 87 0.233 -41 0.077 119 0.027

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A:

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A: From given data we have : x¯=27.2,n=56,σ=8.46α=0.01 null and alternative hypothesis H0:μ=24Ha:μ≠24

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A: True  Yes we can know the reasons for dropping out by performing cross sectional survey on just high…

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A:

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A: First of all, we need to discuss about confounding variable. Confounding variable is a variable…

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Q: Use the normal approximation to find the indicated probability. The sample size is n, the population…

A: Given: n = 96 p = 0.62 Formula Used: μ = np σ = np(1-p) Z = X-μσ

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A: Sample characteristics ls such as sample proportion or sample mean are known are statistic.…

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A: Given that  Y ~ Exp(1/3)

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A: given data  uniform distribution X~U(4.88,5.8) f(x) = 1b-a = 15.8-4.88 = 10.92

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A: Data given 3812,4513,4217,3944,4034,3876,4222,4481,4268,4735,4945,4703

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A: Given Total tickets=30

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A:

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A:

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A:

Q: Tellers in the Southeast Region and determined that their mean training time was 25 hours. Assume…

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Q: Suppose that grade point averages Of undergraduate Students at one University have a bell shaped…

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A: From the provided information, Sample mean (x̄) = 329 Sample variance (s2) = 78

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A: To determine the interval estimate of the variance ratio with known population mean and a given α,…

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Q: how to find quadratic, exponential and power regresion in stacrunch pleaseeee!

A: Solution: It is needed to explain how the quadratic, exponential and power regression would be…