a) Find the z value to the left of the mean so that 90.99% of the area under the
ID: 3253016 • Letter: A
Question
a) Find the z value to the left of the mean so that 90.99% of the area under the distribution curve lies to the right of it. Use Table E and enter the answer to 2 decimal places. Z = ________________
b) Find two z-values, one positive and one negative, that are equidistant from the mean so that the areas in the two tails total 24%. Use Table E and enter the answer to 2 decimal places, separated by a comma if needed. Z = _________________
C) Find two z values so that 46% of the middle area is bounded by them. Use Table E and enter the answer to 2 decimal places, separated by a comma if needed. Z = ______________
Explanation / Answer
a.
P(Z>x) = .9099
x= -1.34
b.
The Z values are -1.175, +1.175
c.
The Z value are -.74, +.74
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