Suppose that we want to test the hypothesis with a significance level of .05 that the climate has changed since industrialization. Suppose that the mean temperature throughout history is 50 degrees. During the last 40years, the mean temperature has been 51degrees and suppose the population standard deviation is 2 degrees. What can we conclude?

Q: Assume that at the average age of a population of wild turtles is normally distributed with mean age…

A:

Q: uppose that pulse rates among healthy adults are normally distributed with a mean of 81 beatsminute…

A: Z = x - μσ~N(0,1)

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A: Given Information: Mean = 21 Standard Deviation = 4

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Q: suppose that you scored 60 on a test that has a population mean of 64 and a standard deviation of 8.…

A: Given: Test Score x=60 μ=64σ=8 Transform in which  μ=50σ=10

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A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

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A: Given Mean =66 Standard deviation=5

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A: It is an important part of statistics . It is widely used .

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A:

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A:

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…

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A: From the provided information, A score of X = 88 corresponds to z = 2 A score of X = 79 corresponds…

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A:

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A: The mean is 727 and the standard deviation is 34 grams.

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A: Here we want to know score which separate top 1%. That is we find the 99 percentile.

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Out of a…

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Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of  79…

A: Given,mean(μ)=79standard deviation(σ)=10

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A: Given mean μ= 68, standard deviation σ= 4 Let X: score of the students = 75

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A: Given,mean(μ)=78standard deviation (σ)=8Z-Score=1.5

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A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

A: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

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A: Given data normal distributionμ = 75 pointsσ = 8 pointstop 4 % of exams will be given A+ . what…

Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of 80 beats…

A: Given data  Normal distribution μ = 80σ= 10P(x≤72) = ?

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A: Given , n = 66 , x¯ = 65.9 , s= 10

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A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: Suppose that pulse rates among healthy adults are normally distributed with a mean of  81…

A:

Q: If the true mean is 9590 with the standard deviation of 0.0080 within what interval will 98% of…

A: Given that , True mean = 9590 Standard Deviation = 0.0080

Q: Hello. I appreciate any help. Thanks.

A: Degrees of freedom:The number of degrees of freedom is the number of values in the final calculation…

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