View the step-by-step solution to:

A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year , monitoring the...

Hello,

I need help with this question. I attached screen shoot of question and data thank you so much





Screen Shot 2019-05-02 at 7.27.43 PM.png


Screen Shot 2019-05-02 at 7.27.53 PM.png

image.png

Screen Shot 2019-05-02 at 7.28.43 PM.pngScreen Shot 2019-05-02 at 7.28.03 PM.png

image.png

A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year , monitoring the progress the students*
made toward completing a bachelor's degree . One aspect of his research was to determine whether students who first attended community college took longer to attain
a bachelor's degree than those who immediately attended and remained at a 4 - year institution . The data in the table attached below summarize the results of his study .
Complete parts al through & ) below .
Click here to view the sample data .
Click here to view Student's +- distribution table*
a ) What is the response variable in this study ? What is the explanatory variable ?
WA. The response variable is the time to graduate . The explanatory variable is the use of community college or not .
~) B . The response variable is the use of community college or not . The explanatory variable is the time to graduate .
CC. The response variable is the number of students . The explanatory variable is the time to graduate .
~` D. The response variable is the time to graduate . The explanatory variable is the number of students .
6 ) Explain why this study can be analyzed using inference of two sample means . Select all that apply .
J A. The sample sizes are not more than 5% of the population .
J B . The samples are independent .
DE. The sample sizes are large ( both greater than or equal to 301.
~] D . The samples can be reasonably assumed to be random . E . The population is given to be normally distributed .
Click to select your answer ('s ) .

Screen Shot 2019-05-02 at 7.27.43 PM.png

Community
NO Transfer
College Transfer
252
1 162
Sample mean time to
5. 42
4. 48
graduate , in year's
Sample standard
1. 15.5
1. 003
deviation time to
graduate , in year's

Screen Shot 2019-05-02 at 7.27.53 PM.png

right tail
I - Distribution
Army in Height Tail
Freedom
11. 75
11.1.5
1. 10
11.15
11. 1175
11.112
11.10125
1.375
3.07B
$. 314
12. THE
15. 8014
31. 821
127.321
31 8300
J.BIG
1.0151
I.EBE
4. 3013
0. 765
14. 0185
72.727
31.5[A]
U.OTB
1. 250
L.EBB
2.353
2. 48]
4. 541
5. 8:41
7.453
10. 215
12.5124
71.741
1.041
1.190
1.532
2.172
2. THE
2.090
3.747
5.508
BELL
1.15 5
1.476
2.015
2.571
2.757
2. 35.5
ELL'T
1. 134
1. 41}
1.543
2.417
2.617
LOL'E
3. 143
+ 317
5. 20 0
0.71 1
1. 110
1. 415
1. 805
2.517
5. 4[18
1. 10B
1.307
1. BELL
2.410
2.35 5
4. 5071
5. 0141
1. 1010
1.383
1.873
2.202
2.30 8
2. 821
3. 250
4. 707
4. ]BY
U.TOO
C.BID
1. [}}
1.373
1. BIZ
2. 228
2.750
$581
4. 144
1 1
UBTE
1.353
12
2. 2011
2.328
3. 457
4. 437
1.356
2. 170
2.3013
2.0195
3, 428
4. 3 18

Screen Shot 2019-05-02 at 7.28.03 PM.png

A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year , monitoring the progress the students*
made toward completing a bachelor's degree . One aspect of his research was to determine whether students who first attended community college took longer to attain
a bachelor's degree than those who immediately attended and remained at a 4 - year institution . The data in the table attached below summarize the results of his study .
Complete parts a ) through & ) below .
Click here to view the sample data .
Click here to view Student's t- distribution table .
Should the hypothesis be rejected ?
" the null hypothesis . The evidence*
\+\ suggest that community college transfer students take longer to attain a bachelor's degree .
* ) Construct a 95%' confidence interval for Hcommunity college - Hno transfer to approximate the mean additional time it takes to complete a bachelor's degree if you
begin in community college .
The confidence interval is the range from \\ to \\
'Round to three decimal places as needed . !"
* ) Do the results of parts c ) and dj imply that community college causes you to take extra time to earn a bachelor's degree ?
NO
Yes
flick to select your answer/s ) .

Screen Shot 2019-05-02 at 7.28.43 PM.png

C ) Does the evidence suggest that community college transfer students take longer to attain a bachelor's degree ? Use an * = 0. 05 level of significance . Perform a hypothesis test . Determine the null and alternative*
Hypotheses .
A. HO : Hcommunity college= Hno transfer * \1 . Hcommunity college ?` Ano transfer*
@ B. HO : Hcommunity college* Hno transfer , 1 : Hcommunity college ?` Hno transfer
CC. HO : Hcommunity college ? Hno transfer . 1 . Hcommunity college{ Hno transfer
CD. HO: Hcommunity college*= Hno transfer . \1 : Hcommunity college S Hno transfer
Determine the test statistic .
=\\ ( Round to two decimal places as needed . !"
Determine the critical value ('s ) . Select the correct choice below and fill in the answer box les ) within your choice .
( Round to three decimal places as needed . !"
~] A. The critical value is\\
@) B . The lower critical value is\\ . The upper critical value is|*
Should the hypothesis be rejected ?*
I the null hypothesis . The evidence
*\ suggest that community college transfer students take longer to attain a bachelor's degree .
` ) Construct a 95% confidence interval for Hcommunity college - Hno transfer to approximate the mean additional time it takes to complete a bachelor's degree if you begin in community college*

Top Answer

a) A. b) the popn is given to be normally distributed.  samples are... View the full answer

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Ask a homework question - tutors are online