dudedude4096
18.07.2020 •
Mathematics
It is believed that, the average numbers of hours spent studying per day (HOURS) during undergraduate education should have a positive linear relationship with the starting salary (SALARY, measured in thousands of dollars per month) after graduation. Given below is the Excel output from regressing starting salary on number of hours spent studying per day for a sample of 51 students.
Note: Some of the numbers in the output are purposely erased.
Regression Statistics
Multiple R
0.8857
R Square
0.7845
Adjusted R Square
0.7801
Standard Error
1.3704
Observations
51
ANOVA
df
SS
MS
F
Significance F
Regression
1
335.0472
335.0473
178.3859
Residual
1.8782
Total
50
427.0798
Coefficients
Standard Error
t Stat
P-value
Lower 95%
Upper 95%
Intercept
-1.8940
0.4018
-4.7134
2.051E-05
-2.7015
-1.0865
Hours
0.9795
0.0733
13.3561
5.944E-18
0.8321
1.1269
a) What is the estimated average change in salary (in thousands of dollars) as a result of spending an extra hour per day studying?
b) What is the value of the measured t-test statistic to test whether average SALARY depends linearly on HOURS?
c) What is the p-value of the measured F-test statistic to test whether HOURS affects SALARY?
d) What are the degrees of freedom for testing whether HOURS affects SALARY?
e) What is the error sum of squares (SSE) of the above regression? Show how you obtain your answer.
f) The 90% confidence interval for the average change in SALARY (in thousands of dollars) as a result of spending an extra hour per day studying is
A) wider than [-2.70159, -1.08654].
B) narrower than [-2.70159, -1.08654].
C) wider than [0.8321927, 1.12697].
D) narrower than [0.8321927, 1.12697].
Explain your reasoning.
To test the claim that average SALARY depends positively on HOURS against the null hypothesis that average SALARY does not depend linearly on HOURS, what is the p-value of the test statistic? What are the results of the test? Explain your answer.
Solved
Show answers
More tips
- H Health and Medicine Discover the Hidden Principles and Real Results of the Japanese Diet...
- H Health and Medicine Understanding Pregnancy Tests: What You Need to Know?...
- H Health and Medicine What Makes a Man a Man?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
Answers on questions: Mathematics
- M Mathematics the hexagon below is divided into 6 identical triangles if the area of the shaded parrallelogram is 42 in 2, what is the are of the hexagon...
- M Mathematics Use the figure to find the indicated measures. m angle GHI = m angle HRI= RI=...
- M Mathematics I dont know if u can see the pic but PLEASE help me find the equation of straight line (2;3)...
- M Mathematics I need help pleaseeee...
- M Mathematics Which value of x makes the ratios equal? A x = 7 B. x = 6 C. x = 5 D X = 4...
- M Mathematics 3. (04.02 MC) Explain why the two figures below are not similar. Use complete sentences and provide evidence to support your explanation (10 points)...
- M Mathematics Please help me with this! 3...
- M Mathematics PLZ HURRY NO BOTS m16 cm el Find the area of the composite figure 126 cm 140 cm 252 cm O 280 cm 17 cm 20 cm 7 cm 16 cm...
- M Mathematics Help plz I need help badly I’m trying to pass this and I need it...
- M Mathematics Easy What is your favorite Anime Mine is Attack On Titan at the moment...
Ответ:
I think it would be b
Step-by-step explanation: plz give/p>