A researcher gathers a random sample of 110 Canadian adults. Which sample value could NOT be observed in the sampling distribution of sample means if the mean income of Canadians is $58,355?
A) mean income $9,440
B) mean income $40,000
C) mean income $330,00
D) No sample means are impossible to observe in the sampling distribution.

Question

Quizplus · Accepted Answer

The sampling distribution of sample means is a normal distribution with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size. Therefore, all possible sample means are possible to observe in the sampling distribution.

A Researcher Gathers a Random Sample of 110 Canadian Adults