i. Two examples of a hypothesis are: 1) mean monthly income from all sources for senior citizens is $841 and 2) twenty percent of juvenile offenders ultimately are caught and sentenced to prison. ii. Hypothesis testing is a procedure based on sample evidence and probability theory to decide whether the hypothesis is a reasonable statement.
iii. The test statistic for a problem involving an unknown population standard deviation is the Student's t distribution.
A) (i), (ii), and (iii) are all correct statements.
B) (i) is a correct statement but not (ii) or (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (i) and (ii) are correct statements but not (iii).
E) (i), (ii), and (iii) are all false statements.

Question

Quizplus · Accepted Answer

All three statements are correct. (i) provides examples of hypotheses, (ii) describes the purpose of hypothesis testing, and (iii) explains the use of t-test when the population standard deviation is unknown.

I Two Examples of a Hypothesis Are: 1) Mean Monthly