True or false:
When the variable is normally distributed, the sample size is less than 30, and the population standard deviationis known, then the t distribution must be used to find confidence intervalsfor the mean.
This statement is true. Note that when working out confidence intervals for the mean, you would use a t distribution when the sample size is …
The expert examines the normal distribution, standard deviation and means. The solution answers the question(s) below.