Question
In: Statistics and Probability
We are interested in determining if the amount of weight a woman gains during pregnancy affects...
- We are interested in determining if the amount of weight a woman gains during pregnancy affects the babies birth weight. The following data are provided:
| Moms Weight Gained | Baby's Weight in Pounds |
| 32 | 6.88 |
| 23 | 6.81 |
| 50 | 7.25 |
| 15 | 8.81 |
| 12 | 5.81 |
| 60 | 6.56 |
| 20 | 7.38 |
| 45 | 7.19 |
| 22 | 8.69 |
| 20 | 5.88 |
- Which one is the independent variable and which one is the dependent variable?
- Find b1
- Find b0.
- Find SST.
- Find SSR.
- Find SSE.
- Find the coefficient of determination.
- Find the correlation coefficient.
- Find s2.
- Find the test statistic for testing if b1 is significant or not.
- What conclusion would you make based on the test statistic found above (use .05 confidence level)?
- Find the 95% confidence interval for b1 .
- Assuming someone gained 30 pounds, how much would you expect their baby to weigh?
- Assuming someone gained 30 pounds, what is the 90% confidence interval for the expected weight of the baby?
- Assuming someone gained 30 pounds, what is the 90% prediction interval for the expected weight of the baby?
Solutions
orchestra answered 2 years agoRelated Solutions
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Explain recommended maternal weight gain during pregnancy
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The weight gain of women during pregnancy has an important effect on the birth weight of...
The weight gain of women
during pregnancy has an important effect on the birth weight of
their children. If the weight gain is not adequate, the infant is
more likely to be small and will tend to be less healthy. In a
study conducted in two countries, weight gains (in kilogram) of
women during the third trimester of pregnancy were measured. The
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Country
n
ȳ
s2
Egypt
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Kenya
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particular compound as a function of the amount of time the
compound is exposed to the air. The data below give the weight
losses associated with settings of the exposure time.
Weight Loss (in
pounds)
Exposure Time (in hours)
____________________________________________________
4.0
4
6.0
5
2.0
3
.
.
.
.
9.0 ...
A chemist in interested in determining the weight loss of a particular compound as a function...
A chemist in interested in determining the weight loss of a
particular compound as a function of the amount of time the
compound is exposed to the air. The data below give the weight
losses associated with settings of the exposure time.
Weight Loss (in
pounds)
Exposure Time (in hours)
____________________________________________________
4.0
4
6.0
5
2.0
3
.
.
.
.
9.0 ...
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A researcher is interested in determining whether the illumination level in a room affects how quickly...
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