а. Р(z$2.39) b. P(z >1.28) с. Р(zS-2.87)

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7. Using the standard normal distribution find the following.
P(z<2.39)
e. P(-2.35<z31.87)
а.
b. P(z>1.28)
f. P(1.28<z < 2.05)
с.
P(z<-2.87)
g.
Find z
so that
P(-z* <z< z*) = 0.98
d. P(z 2-3.21)
h. Find z
so that
P(-z* < z< z*) = 0.99
Transcribed Image Text:7. Using the standard normal distribution find the following. P(z<2.39) e. P(-2.35<z31.87) а. b. P(z>1.28) f. P(1.28<z < 2.05) с. P(z<-2.87) g. Find z so that P(-z* <z< z*) = 0.98 d. P(z 2-3.21) h. Find z so that P(-z* < z< z*) = 0.99
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7.

a.

The value of Pz2.39 is,

Using the Standard Normal Distribution: the probability less than 2.39.

  • Locate the value 2.3 in column z.
  • Locate the value 0.09 in top row.
  • The intersecting value of row and column is 0.9916.

The required value is,

Pz2.39=0.9916

Thus, the value of Pz2.39 is 0.9916.

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