Part b give a 95 confidence interval for the mean

Part b : Give a 95% confidence interval for the mean difference in hemoglobin level between the two
populations of infants.
a)
I have placed my work and my answer on my answer sheet.
b)
I want to have points deducted from my test for not working this problem.
Question 16
Your answer is CORRECT.
This is a written question, worth 10 points. DO NOT place the problem code on the answer sheet. A
proctor will fill this out after exam submission. Show all steps (work) on your answer sheet for full
credit.
Problem Code: 1662
Consumer Reports rated 77 cereals on a scale of 0 to 100. The number of grams of sugar contained in each
serving of the corresponding cereals was also recorded. Using sugar as the explanatory variable and the
Consumer Reports rating as the dependent variable, computer output of the data is as follows (the p-values
are intentionally left blank):
Predictor Coef StDev
Constant 58.93 1.847 30.58
Sugars
− 2.56
0.28
− 9.98
S = 9.204 R-Sq = 61.2% R-Sq(adj) = 59.9%
Part a: What is the regression equation?
Part b: Calculate the 95% confidence interval of the slope of the regression line for all cereals.
Part c: Use the information provided to test whether there is a significant relationship between the sugar
content and the Consumer Report rating at the 5% level.
T P
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a)
I have placed my work and my answer on my answer sheet.
b)
I want to have points deducted from my test for not working this problem.
Question 17
Your answer is CORRECT.
This is a written question, worth 10 points. DO NOT place the problem code on the answer sheet. A
proctor will fill this out after exam submission. Show all steps (work) on your answer sheet for full
credit.
Problem Code: 1762
Suppose the random variable has CDF given by the function

12/9/2016 Print Test
8/9
Part a: Find .
Part b: Find .
Part c: Find the desity function .
a) I have placed my work and my answer on my answer sheet.
b)
I want to have points deducted from my test for not working this problem.
Question 18
Your answer is CORRECT.
This is a written question, worth 10 points. DO NOT place the problem code on the answer sheet. A
proctor will fill this out after exam submission. Show all steps (work) on your answer sheet for full
credit.