1. In the following situations, indicate whether you'd use the normal distribution, the t distribution, or neither.

a. The population is normally distributed, and you know the population standard deviation.

b. You don't know the population standard deviation, and the sample size is 35.

c. The sample size is 22, and the population is normally distributed.

d. The sample size is 12, and the population is not normally distributed.

e. The sample size is 45, and you know the population standard deviation.