Author Question: The reason for using the t-distribution in a hypothesis test about the population mean is: A) the ... (Read 65 times)

Tazate · **on:** Jun 24, 2018

The reason for using the t-distribution in a hypothesis test about the population mean is:

A) the population standard deviation is unknown.
B) it results in a lower probability of a Type I error occurring.
C) it provides a smaller critical value than the standard normal distribution for a given sample size.
D) the population is not normally distributed.

Question 2

Which of the following is not a condition of the binomial distribution?

A) Two possible outcomes for each trial
B) The trials are independent.
C) The standard deviation is equal to the square root of the mean.
D) The probability of a success remains constant from trial to trial.