Question

In: Statistics and Probability

1-3: Find the following standard normal probabilities using Table 2 on pgs. 788 and 789. 1)...

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)

Solutions

Expert Solution

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

----------------------------------------------------------------------The End ------------------------------------------------------------------------

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