# probabilities

Find the indicated probabilities

1. P(z < 1.28)

2. P(z > -0.74)

3. P(-2.15 < z < 1.55)

4. P (0.42 < z <3.15)

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#### Solution Preview

1. P(z < 1.28)

We can look up the z-table to get

P(z < 1.28)=0.8997

2. P(z > -0.74)

We can look up the z-table to get

P(z < ...

#### Solution Summary

It shows how to calculate the probability using z-table.

$2.19