Which of the following statements istrue?

Question 15 options:

a)

Thetdistribution can be used when finding a confidence interval for the population mean whenever the sample size is small.

b)

Thepdistribution can be used when finding a confidence interval for the population mean whenever the sample size is small.

c)

Thetdistribution can't be used when finding a confidence interval for the population mean whenever the sample size is small.

d)

Thepdistribution can't be used when finding a confidence interval for the sample mean whenever the sample size is small.