# Question: Gestation periods of humans have a mean of 266 days

Gestation periods of humans have a mean of 266 days and a standard deviation of 16 days. Let y denote the variable "gestation period" for humans.

a. Find the standardized variable corresponding to y.

b. What are the mean and standard deviation of the standardized variable?

c. Obtain the z-scores for gestation periods of 227 days and 315 days. Round your answers to two decimal places.

d. Interpret your answers in part (c).

e. Construct a graph similar to Fig. 3.15 on page 134 that shows your results from parts (b) and (c).

a. Find the standardized variable corresponding to y.

b. What are the mean and standard deviation of the standardized variable?

c. Obtain the z-scores for gestation periods of 227 days and 315 days. Round your answers to two decimal places.

d. Interpret your answers in part (c).

e. Construct a graph similar to Fig. 3.15 on page 134 that shows your results from parts (b) and (c).

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