Question

There are 5 alternate hypotheses listed below. For each one: construct (that is, write out) the corresponding null hypothesis. State whether it is directional or non-directional. State whether it is one-tailed or a two-tailed.
A. Maximum security prisons have a higher mean assault rate than do minimum security ones
B. Police officers who receive more citizen complaints have higher rates of serious misconduct.
C. The type of sentence received by juvenile defendants is affected by their race.
D. People who drive cars in bad condition are more likely than those who drive nice cars to be pulled over by police.
E. Type of defense attorney influences the speed of case processing.

Answer 1

Solution:

The null hypothesis for the given alternative hypotheses will be as follows:

A) Maximum security prisons have a lesser or equal mean assault rate than do minimum security ones.

It is directional hypothesis. It is one-tailed test.

B) Police officers who receive more citizen complaints have lower or equal rates of serious misconduct.

This is directional hypothesis. It is one-tailed test.

C) The type of sentence received by juvenile defendants is independent of their race.

This is non directional hypothesis. It is one-tailed test.

D) People who drive cars in bad condition are equally likely than those who drive nice cars to be pulled over by police.

This is directional hypothesis. It is one-tailed test.

E)  Type of defense attorney and the speed of case processing are independent.

This is non directional hypothesis. It is one-tailed test.