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QUESTION
(13 A standard normal variable has a mean of zero and a variance of 1 ie. Z ' N{0, 1). SKETCH THE AREA and find the following probabilities: 1....
(13 A standard normal variable has a mean of zero and a variance of 1 ie. Z "‘ N{0, 1). SKETCHTHE AREA and find the following probabilities: 1. P(Z $1.25)2. P(Z $1.25)3. P(—.38 g z $.25) Q4 A standard normal variable has a mean of zero and a variance of 1 ie. Z ~ MO, 1). SKETCHTHE AREA and find the following 2 that fulfills the probability: 1. P(ZSZ) = 0.12. P(ZZzorZS-z)=0.13. At what value of z, the area to the right is 2.5%? 4. At what value of z, the area between —2 and z is 68%?
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