Find the raw scores that cut-off the most extreme 5% under the normal distribution's curve that has a mean of 12 and standard de
viation of 3.5.
1 answer:
Answer:
5.14 and 18.86
Step-by-step explanation:
They give us the following information:
mean (m) = 12
standard deviation (sd) = 3.5
For cutting extreme 5% under the normal distribution curve standard normal score is + - 1.96
we have to:
z = (x - m) / sd
Lower limit is
-1.96 = (x -12) /3.5
-6.86 = x - 12
x = 5.14
Upper limit is
1.96 = (x -12) /3.5
6.86 = x - 12
x = 18.86
Therefore, the raw scores are 5.14 and 18.86
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