For the following hypothesisâ test, determine the null and alternative hypotheses.â Also, classify the hypothesis test asâ two-tailed, left-tailed, orâ right-tailed. The mean length of imprisonment forâ motor-vehicle theft offenders in this country is 22.1 months. A hypothesis test is to be performed to determine whether the mean length of imprisonment forâ motor-vehicle theft offenders in this city differs from the national mean of 22.1 months.
1. Choose the correct null and alternative hypotheses below.
A. H0: mu = 22.1 months
Ha: mu > 22.1 months
B. H0: mu = 22.1 months
Ha: mu is not equal to 22.1 months
C. H0: mu = 22.1 months
Ha: mu < 22.1 months
D. H0: mu > 22.1 months
Ha: mu = 22.1 months
E. H0: mu is not equal to 22.1 months
Ha: mu = 22.1 months
F. H0: mu = 22.1 months
Ha: mu > 22.1 months
2. Which of the following is the correct classification of the hypothesis test?
A. Two-tailed.
B. Left-tailed.
C. Right-tailed.