Question

Which one of the following is not a characteristic of t distribution?

a. t distribution is defined by the degrees of freedom.
b. t distribution is bell-shaped.
c. t distribution is symmetric along zero.
d, t distribution is commonly known as population mean.

Answer 1

The t-distribution is bell-shaped and symmetric along zero, but it is not commonly known as the population mean.

Step-by-step explanation:

The correct answer is d. t distribution is commonly known as population mean.

The t-distribution is a probability distribution that is defined by the degrees of freedom, which is one less than the number of data items. It is bell-shaped and symmetric along zero, similar to the standard normal distribution. However, it is not commonly known as the population mean.