4. Find the z-score such that the area under the standard normal curve to the le

ID: 3362408 • Letter: 4

Question

4. Find the z-score such that the area under the standard normal curve to the left is

0.83.

__?__ is the z-score such that the area under the curve to the left is 0.83.

(Round to two decimal places as needed.)

5. Find the z-score such that the area under the standard normal curve to the right is

0.44.

The approximate z-score that corresponds to a right tail area of 0.44 is _?__ (Round to two decimal places as needed.)

6. Find the value of z.

z 0.22= ___?__ (Round to two decimal places as needed.)

a) P(z<0.83), this can be found from the normal distribution table as 0.7967

b) P(z>0.44) or 1-P(z<0.44)=1-0.6700=0.33

c) alpha of 0.22 means z = 1 - (0.22/2)=0.89

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