On a standard measure of hearing ability the mean is 300 and the standard deviation is 20. What is the raw score for people whose z scores on this test are -4.5?
1 Answer
May 15, 2018
The raw score for people whose z scores on this test are -4.5
Explanation:
#z=(x-barx)/sigma#
#-4.5=(x-300)/20#
#(x-300)/20=-4.5#
#x-300=-4.5 xx 20=-90#
#x=-90+300=210#
#x=210#
The raw score for people whose z scores on this test are -4.5
