1.A population has a mean=30 and a standard deviation of=5 a) if .pdf

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1.A population has a mean=30 and a standard deviation of=5 a) if 5 points were added to every score in the population,what would be the new values for the mean and standard deviation b) if every score in the population were multiplied by 3, what would be the new values for the mean and standard deviation 2. For the following sample n=4 scores: 82,88,82, and 86: a) simplify the arithmetic by subtracting 80 points from each score to obtain a new sample of 2,8,2, and 6. then, compute the mean and standard deviation for the new sample. b) using the values you obtained in part a, what are the values for the mean and standard deviation for the original sample. Solution 2) a) M = 35 V(25) ; SD = 5 b) M = 90 V(k*X) = k^2*25 = 9*25 SD = 15.

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