A group of researchers want to determine if incidents of drunk driving are equally likely to occur on different days of
Posted: Wed May 04, 2022 12:49 pm
A group of researchers want to determine if incidents of
drunk driving are equally likely to occur on different days of the
week (fe = 0.143). They collect data on
drunk driving arrests and calculate frequencies for each day of the
week. They collected data from 406 incidents overall. They observed
the following frequencies: Sunday (24), Monday (59), Tuesday (46),
Wednesday (37), Thursday (50), Friday (92), Saturday (98). Use a
one-variable chi-square analysis (where α = .001) to determine if
there are significant differences in drunk driving arrests by day
of the week.
1. Identify the
null hypothesis
2. List your
degrees of freedom
3. List the
expected frequency (raw number) for drunk driving arrests on
Fridays
4. List
your χ2 test
statistic
5. List your
critical χ2 value(s)
6.
Are there statistically significant
differences in drunk driving arrests by day of the week?
(Yes/No)
drunk driving are equally likely to occur on different days of the
week (fe = 0.143). They collect data on
drunk driving arrests and calculate frequencies for each day of the
week. They collected data from 406 incidents overall. They observed
the following frequencies: Sunday (24), Monday (59), Tuesday (46),
Wednesday (37), Thursday (50), Friday (92), Saturday (98). Use a
one-variable chi-square analysis (where α = .001) to determine if
there are significant differences in drunk driving arrests by day
of the week.
1. Identify the
null hypothesis
2. List your
degrees of freedom
3. List the
expected frequency (raw number) for drunk driving arrests on
Fridays
4. List
your χ2 test
statistic
5. List your
critical χ2 value(s)
6.
Are there statistically significant
differences in drunk driving arrests by day of the week?
(Yes/No)