Suppose the mean of a math exam score is 70 with a standard deviation of 12. If each score is increased by 4 and then each result is multiplied by 1.05, then new mean and standard deviation are O a.p = 77.7 and o = 16 O b. p = 77.5 and o = 12 O C.p = 77.7 and o = 12 O d.p = 74.0 and o = 12.05 O e.p= 77.7 and o = 12.6

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A: Given,  Mean μ = 310 Standard deviation σ = 47 Let x be hours a light bulb last

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A: Solution: From the given information, mean math of a math exam score is 70 and a standard deviation…

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A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

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A: Given mean age = 45Standard deviation = 5.25The Z score with 0.0505 to its left is -1.64 and the Z…

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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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Q: If there is a small amount of variation, then the standard deviation is what

A: Standard deviation: It is defined as the positive square root of the variance. It fulfils requisites…

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A: P(X>x)=2.1% x=?

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A: Let "X" be the annual rainfall in Ferndale, California.

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A: Given : Suppose that you have a X= 75 on an exam with Ú=70

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A: Given mean (μ) = 8 Then Mean Absolute Deviation is given by  1n∑xi-μ

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A: If a distribution of test scores is normal, Mean = 78 Standard deviation = 11

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A: Given that  The Standard deviation is 5

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A: Answer: The standard deviation of new data is remains same as original data. As a general rule, the…

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A: We have given that  X~N( mu , sigma^2) mu=35.5  ,sigma = 2.5 Z-socre =(x-mu)/sigma

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A: (a) Condition for Average Deviation: If the value of the observation is increased or decreased by a…

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Q: . A professor finds that the grades in a large class are normally distributed. The mean of the…

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A: Mean = 70 Std dev = 10

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A: As per our guideline we are supposed to answer only  3 sub-parts of any question

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A: