If the population mean is assumed to be 20 and the sample standard deviation is 5, a score of 15 would have a Z-value of _____.
a.+1.00
b.-7.00
c.-1.00
d.+5.00
Answer: C: -1.00
If the population mean is assumed to be 20 and the sample standard deviation is 5, a score of 15 would have a Z-value of _____.
a.+1.00
b.-7.00
c.-1.00
d.+5.00
Answer: C: -1.00