1. Find the indicated probability using the standard normal distribution. P(-1.89 < z < 0)
2. Find the indicated probability using the standard normal distribution. P(z < -1.91 or z > 1.91)
3. Assume the random variable x is normally distributed with mean μ = 89 and standard deviation σ = 5. Find the indicated probability.
4. Assume the random variable x is normally distributed with mean μ = 50 and standard deviation σ = 7. Find the indicated probability. P(x > 41)
5. Assume the random variable x is normally distributed with mean μ = 81 and standard deviation σ = 4. Find the indicated probability. P(70 < x < 77)
6. Use the standard normal table to find the z-score that corresponds to the given percentile. If the area is not in the table, use the entry closest to the area. If the area is halfway between two entries, use the z-score halfway between the corresponding z-scores. If convenient, use technology to find the z-score. P48. The z-score that corresponds to P48 is