Question
In: Economics
In this exercise you will investigate the relationship between birth weight and smoking during pregnancy The...
In this exercise you will investigate the relationship between birth weight and smoking during pregnancy The following table contains data for a random sample of babies born in Pennsylvania in 1989. The data includes the baby's birth weight together with various characteristics of the mother, including whether she smoked during her pregnancy. Download the data from the table by clicking the download table icon A detailed description of the variables used in the data set is available here Use a statistical package of your choice to answer the following questions. What is the average value of Birthweight for all mothers in the sample?
The average value of Birthweight for all mothers in the sample is ______ grams.
The average value of Birthweight for mothers who smoke in the sample is _______ grams.
The average value of Birthweight for mothers who don't smoke is ______ grams.
| Birth weight and smoking during pregnancy | |
| Birthweight | Smoker |
| 3629 | 0 |
| 3884 | 0 |
| 2948 | 0 |
| 3232 | 0 |
| 3799 | 0 |
| 3005 | 0 |
| 3827 | 0 |
| 3060 | 0 |
| 3062 | 0 |
| 3410 | 0 |
| 3714 | 0 |
| 3487 | 0 |
| 3657 | 0 |
| 3771 | 0 |
| 3771 | 0 |
| 3820 | 0 |
| 4196 | 0 |
| 3320 | 0 |
| 3827 | 0 |
| 4020 | 0 |
| 2808 | 0 |
| 3515 | 0 |
| 3090 | 0 |
| 2778 | 0 |
| 3771 | 0 |
| 3140 | 0 |
| 3317 | 0 |
| 4210 | 0 |
| 3076 | 0 |
| 3771 | 0 |
| 3487 | 0 |
| 3487 | 0 |
| 1559 | 0 |
| 3630 | 0 |
| 3572 | 0 |
| 3260 | 0 |
| 3430 | 0 |
| 4224 | 0 |
| 2955 | 0 |
| 3912 | 0 |
| 3196 | 0 |
| 3459 | 0 |
| 3459 | 0 |
| 3430 | 0 |
| 2750 | 0 |
| 3686 | 0 |
| 3260 | 0 |
| 3969 | 0 |
| 3430 | 0 |
| 3629 | 0 |
| 2863 | 0 |
| 2830 | 0 |
| 3105 | 0 |
| 2948 | 0 |
| 3175 | 0 |
| 4309 | 0 |
| 3232 | 0 |
| 3487 | 0 |
| 2807 | 0 |
| 3820 | 0 |
| 3941 | 0 |
| 2211 | 0 |
| 3204 | 0 |
| 3657 | 1 |
| 3487 | 1 |
| 2495 | 1 |
| 4253 | 1 |
| 3147 | 1 |
| 3600 | 1 |
| 3005 | 1 |
| 2552 | 1 |
| 3147 | 1 |
| 4593 | 1 |
| 3430 | 1 |
| 1985 | 1 |
| 3317 | 1 |
| 3487 | 1 |
| 3884 | 1 |
| 3289 | 1 |
| 3470 | 1 |
| 2665 | 1 |
| 3090 | 1 |
| 2835 | 1 |
| 1843 | 1 |
| 4451 | 1 |
| 2863 | 1 |
| 900 | 1 |
| 2353 | 1 |
| 3317 | 1 |
| 2850 | 1 |
| 3560 | 1 |
| 3080 | 1 |
| 2325 | 1 |
| 3119 | 1 |
| 3175 | 1 |
| 3313 | 1 |
| 3374 | 1 |
| 2750 | 1 |
| 2835 | 1 |
| 3345 | 1 |
Solutions
Expert Solution
a) Here we have a total of 100 observations and the sum of these observations is 329472. Therefore, The average value of Birthweight for all mothers in the sample is 329472 / 100 = 3294.72 grams.
b) No. of mothers who smoke is 37 and the sum of the total birthweight respectively is 114841. Therefore, The average value of Birthweight for mothers who smoke in the sample is 114841 / 37 = 3103.81 grams.
c) No. of mothers who do not smoke is 63 and the sum of the total birthweight respectively is 214631. Therefore, The average value of Birthweight for mothers who do not smoke in the sample is 214631 / 63 = 3406.84 grams.
Rahul Sunny answered 1 year agoRelated Solutions
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