Z-score corresponding to values

Reference no: EM13106422

1) Compute the z-score corresponding to each of the following values of x:

a. x=40, s=5, x (with line over) = 30
b. x=90, (weird u for subtracting x with line over) = 89, (weird o with line over it for dividing the result by s) = 2
c. (weird u for subtracting x with line over) = 50, (weird o with line over it for dividing the result by s) = 5, x = 50
d. s=4, x=20, x (with line over) = 30

2) What is the 50th percentile of a quantitative data set called?

3) Suppose that 40 and 90 are two elements of a population data set and that their z-scores are -2 and 3, respectively. Using only this information, is it possible to determine the population's mean and standard deviation? If so, find them. If not, explain why its not possible.

Reference no: EM13106422

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