Final answer:
To find the values, we can use the given information and the z-table. The z-score represents the number of standard deviations away from the mean.
Step-by-step explanation:
To find the values, we can use the given information and the z-table. The z-score represents the number of standard deviations away from the mean. For each value, we look up the corresponding area under the normal curve in the z-table.
a. Z0.31 = 0.617
b. Z0.47 = 0.679
c. Z0.97 = 1.880