Question
In: Statistics and Probability
. Dr. Chappel wishes to investigate the relationship between birthweight and the estriol level of pregnant...
. Dr. Chappel wishes to investigate the relationship between birthweight and the estriol level of pregnant women. A random sample of eight women were chosen in a Houston hospital and Dr. Chappel tabulated her data as follows.
|
Estriol (mg/24 hr) |
9 |
14 |
21 |
16 |
24 |
25 |
18 |
20 |
|
Birthweight (g/100) |
25 |
27 |
30 |
32 |
28 |
36 |
29 |
38 |
- Calculate Pearson’s correlation coefficient r.
- Calculate a t statistic that can be used to test whether the amount of exercise and blood pressure are correlated.
- If the above test is performed at the 5% level, write down the critical value and specify the number of degrees of freedom that you use to determine the critical value.
- Draw you conclusion at the 5% level.
Solutions
orchestra answered 2 years agoRelated Solutions
Consider a study to relate birthweight (y) to the estriol level(x) of pregnant women. The data...
Consider a study to relate birthweight
(y) to the estriol level(x) of pregnant women. The data is below
with 32 observations.
i
Estriol(mg/24hr)
Weight(g/100)
i
Estriol(mg/24hr)
Weight(g/100)
1
7
25
17
17
32
2
9
25
18
25
32
3
9
25
19
27
34
4
12
27
20
15
34
5
14
27
21
15
34
6
16
27
22
15
35
7
16
24
23
16
35
8
14
30
24
19
34
9
16
30
25
18...
3. A study was conducted to relate birthweight (measured in hundreds of grams) and estriol level...
3. A study was conducted to relate birthweight (measured in
hundreds of grams) and estriol level (measured in mg/24hr) in 11
pregnant women. A simple linear regression model was fit to the
sample data. Use the output from this page to answer the following
questions.
THE REG PROCEEDURE
ANALYSIS OF VARIANCE
SOURCE DF SUM OF SQUARE MEAN SQUARE F-VALUE PR >
F
MODEL 1 228.38 228.381 22.557 0.001045
ERROR 9 91.12 10.124
TOTAL 10...
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Ex=40
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earned and educational level of workers. For a sample of 4000
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