Question
In: Math
A corrections researcher is interested in gender differences in the amount of bail that arrestees have...
A corrections researcher is interested in gender differences in the amount of bail that arrestees have to pay. The data for this study is in the Excel data file, under the tab labeled Question 2. Conduct a t-test: Two-Sample Assuming Equal Variances.
Men: 1000,300,1500,200,500,150,1000,500,1200
Females: 500, 250, 100,200, 200, 250,100,150,100
a. What is the null hypothesis?
b. What is the research hypothesis?
c. Why run a Two-Sample Assuming Equal Variances t-test?
d. Interpret the findings. What are the results of the hypothesis test? Can you reject the null hypothesis?
Solutions
Expert Solution
So, we can say that there is enough evidence to support the claim that there is significant gender differences in the amount of bail that arrestees have to pay.
milcah answered 1 year agoRelated Solutions
2-Way ANOVA A researcher was interested in the impact that gender and temperature have on participants’...
2-Way ANOVA
A researcher was interested in the impact that gender and
temperature have on participants’ responses on a memory task. The
researcher randomly-selected 20 participants to take part in the
experiment: 10 of the participants were male and 10 of the
participants were female. The participants from each gender group
were then randomly assigned to complete the memory task (scores
1-100) either in a cold room or in a warm room.
Participant
Score
Temp
M1
64
cold
M2
68...
A researcher is interested in determining if there is a difference in the amount of time...
A researcher is interested in determining if there is a
difference in the amount of time babies pay attention to other
babies and to adults. The researcher takes a group of 26
babies and randomly assigns them to two groups (there are 13 babies
in each group). In one group, babies watch a video of
other babies and in the other group, babies watch a video of
adults. The researcher records how long each baby pays
attention to the video. He finds that babies...
A researcher is interested in studying the effect that the amount of fat in the diet...
A researcher is interested in studying the effect that the
amount of fat in the diet and amount of exercise has on the mental
acuity of middle-aged women. The researcher used three different
treatment levels for the diet and two levels for the exercise. The
results of the acuity test for the subjects in the different
treatment levels are shown below.
Diet
Exercise
<30% fat
30% - 60% fat
>60% fat
<60 minutes
4
3
2
4
1
2
2...
A researcher is interested in studying the effect that the amount of fat in the diet...
A researcher is interested in studying the effect that the
amount of fat in the diet and amount of exercise has on the mental
acuity of middle-aged women. The researcher used three different
treatment levels for the diet and two levels for the exercise. The
results of the acuity test for the subjects in the different
treatment levels are shown below.
Diet
Exercise
<30% fat
30% - 60% fat
>60% fat
<60 minutes
4
3
2
4
1
2
2...
A researcher is interested in studying the effect that the amount of fat in the diet...
A researcher is interested in studying the effect that the
amount of fat in the diet and amount of exercise has on the mental
acuity of middle-aged women. The researcher used three different
treatment levels for the diet and two levels for the exercise. The
results of the acuity test for the subjects in the different
treatment levels are shown below.
Diet
Exercise
<30% fat
30% - 60% fat
>60% fat
<60 minutes
4
3
2
4
1
2
2...
A researcher is interested in the amount of soda consumption for males and females compared to...
A researcher is interested in the amount of soda consumption
for males and females compared to the population. Suppose that the
researcher selects a sample of n = 36 male undergraduates and a
sample of n = 25 female undergraduates. On average, males reported
consuming M = 2.45 drinks per month, while females averaged M =
1.47 drinks per month. Assuming an overall average for
undergraduates of μ= 1.85 drinks per month with a standard
deviation σ=1.2, please answer the...
A researcher is interested in the mean amount of time it takes people to complete a...
A researcher is interested in the mean amount of time it takes
people to complete a personality questionnaire. He selects 40
people at random and calculates the mean amount of time to be 20.4
min with a variance of 17.64 min2 .
a) Define the parameter of interest.
b) Define the random variable of interest.
c) Name the distribution required to calculate confidence
intervals. (Check the relevant criteria.)
d) Construct a 98% confidence interval for the true mean amount
of...
A researcher working for a Silicon Valley startup was interested in understanding differences in the productivity...
A researcher working for a Silicon Valley startup was
interested in understanding differences in the productivity of Uber
drivers and traditional taxi cab drivers. She selected a random
sample of 18 drivers and compared the number of rides each gave on
the previous day. The data representing the number of rides given
in the previous day are shown below. Using these data and a .05
level of significance, test the null hypothesis that Uber drivers
and taxicab drivers do not...
A researcher is interested in examining whether there are differences in students’ sense of safety across...
A researcher is interested in examining whether there are
differences in students’ sense of safety across schools. She
selects three schools and surveys five students from each school.
The tab labeled Question 3 reflects the answers from this
survey—the higher the score, the safer the student feels. Is there
a difference between these schools in the students’ sense of
safety?
School A
School B
School C
3
2
4
3
2
4
3
2
3
4
1
4
4
3...
A researcher was interested in the amount of time cats and dogs nap while their owners...
A researcher was interested in the amount of time cats and dogs
nap while their owners are away from home on a regular work day.
The 30 cats napped an average of 7.0 hours with a standard
deviation of 1.5 hours. The 30 dogs napped a mean of 5.0 hours with
a standard deviation of 1.5 hours. Assume that the two populations
are normally distributed with equal but unknown standard
deviations. Test at the 5% significance level if the amount...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Partial Pressure/Total Pressure Question Consider the equation: (CH3)2N2H2(l) + 2N2O4(l) ---> 3N2(g) + 4H2O(g) + 2CO2(g)...
- Can you show how to do this step by step using Matlab please. Write a function...
- Plaintiff died of gas asphyxiation when he entered a sewer tunnel without a mask to answer...
- Retail Co has a unique set of HR practices. Describe and evaluate how you think the...
- Discuss some of the ways artists experimented with new styles and techniques, and how these differed...
- What is the recurrence relation for T(n) = (n-1)T(n-1) + n?
- Q2: Specify any four difference between Client/Server computing and Peer-to-Peer computing. Which architecture used by Bitcoin...
ADVERTISEMENT