1.) There are 5 research hypotheses listed below: For each one, do the following
ID: 2927465 • Letter: 1
Question
1.)
There are 5 research hypotheses listed below: For each one, do the following: • Construct (that is, write out) the corresponding null hypothesis • State whether it is directional or non-directional; and • State whether a one-tailed or a two-tailed test of significance would be used for a hypothesis test:
a. Attitudes towards sex offender registry laws differ between criminal justice majors and business majors.
b. The frequency of drug use is different for high school dropouts than for high school graduates.
c. Traffic intersections with red-light cameras have fewer accidents than those without such cameras.
d. Young adults who have a history of childhood neglect have more misdemeanor arrests.
e. Older respondents have higher levels of fear of crime than younger respondents do.
Identify the correct independent and dependent variables.
Explanation / Answer
Solution:-
a) Attitudes towards sex offender registry laws differ between criminal justice majors and business majors.
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: justice majors = business majors.
Alternative hypothesis: justice majors business majors.
Note that these hypotheses constitute a two-tailed test. The null hypothesis will be rejected if the difference between sample means is too big or if it is too small.
b) The frequency of drug use is different for high school dropouts than for high school graduates.
Null hypothesis: high school dropouts = high school graduates.
Alternative hypothesis: high school dropouts high school graduates.
Note that these hypotheses constitute a two-tailed test. The null hypothesis will be rejected if the difference between sample means is too big or if it is too small.
c) Traffic intersections with red-light cameras have fewer accidents than those without such cameras.
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: Cameras> Without cameras
Alternative hypothesis: Cameras < Without cameras
Note that these hypotheses constitute a one-tailed test.
d) Young adults who have a history of childhood neglect have more misdemeanor arrests.
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: History< non- History
Alternative hypothesis: History > non- History
Note that these hypotheses constitute a one-tailed test.
e) Older respondents have higher levels of fear of crime than younger respondents do.
State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.
Null hypothesis: Older< Young
Alternative hypothesis: Older > Young
Note that these hypotheses constitute a one-tailed test.
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