A sample of n=20 scores has a mean of M=30.a. If the sample standard deviation i

A sample of n=20 scores has a mean of M=30.a. If the sample standard deviation is s=10 would a score of X=38 be considered an extreme value(out in the tail of the distribution)?b. If the sample standard deviation is s=2 would a score of X=38 be considered an extreme value(out in the tail of the distribution)?
Problem 2A normal-shaped population has mean of u=80 and a standard deviation of o=20.a. If 10 points were added to every score in the population what would be the new values for the population mean and standard deviation?b. If every score in the original population was multiplied by 2 what would be the new values for the population mean and standard deviation?Problem 3For the following scores:1 0 4 1 1 5a. Calculate the mean.b. find the deviation for each score and check that the deviations sum to zero Problem 4 Calculate SS variance and standard deviation for the following sample of n=6 scores: 11 0 8 2 4 5 Using the definitional formula for SS Problem 5 Calculate SS variance and standard deviation for the following sample of n=9 scores: 3 1 1 1
Using the computational formulaStudent terms: