Which of the following statements describes a Type II error in hypothesis testing?
A)A court declares a defendant guilty,when he is actually innocent.
B)A scientist,trying to support a theory about the number of different species of animals in a particular country,declares the null hypothesis to be "there are 715 different species" when there are actually more than 800.
C)A statistician determines,through hypothesis testing,that the mean number of televisions per household in a certain community is 1.4,when it is actually greater than 1.4.
D)Through hypothesis testing,we find the alternative hypothesis to be true when it is actually false.

Question

Quizplus · Accepted Answer

A Type II error occurs when the null hypothesis is not rejected when it is actually false. In choice C, the null hypothesis that the mean number of televisions per household is 1.4 is not rejected, even though the true mean is greater than 1.4.

Which of the Following Statements Describes a Type II Error