In: Statistics and Probability
1-3: Find the following standard normal probabilities using Table 2 on pgs. 788 and 789.
1) P (z < - 1.86)
2) P (z > 1.42)
3) P (- 0.63 < z < 1.74)
ANSWER:
Given data,
1-3: Find the following standard normal probabilities
1) P (z < - 1.86)
P (z < - 1.86) = 0.03144
2) P (z > 1.42)
P (z > 1.42) = 1-P (z < 1.42)
P (z > 1.42) = 1-0.92220
P (z > 1.42) = 0.0778
3) P (- 0.63 < z < 1.74)
P (- 0.63 < z < 1.74) = P(z < 1.74) - P(z<-0.63)
P (- 0.63 < z < 1.74) = 0.95907 - 0.26435
P (- 0.63 < z < 1.74) = 0.69472
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