Question 26 3 pts Small Sample Mean Problem. A study was done to determine the e

Question

Question 26 3 pts Small Sample Mean Problem. A study was done to determine the effect of vitamin supplements for the mother on the birth weight of babies. The sample size was 17. All the women in the study regularly visited a doctor during their pregnancy. The data below show the summary statistics and a stem and leaf plot of the birth weight of the 17 babies. Weight is in kilograms (kg) Stem Leaf Mean Median Variance Std Dev CV Count 3.761 3.730 0.531 0.729 19.380 17 247 254 3 02 22 39 43 352 68 73 73 409 13 33 37 4* 47 68 5 14 in kg, stem is whole number 2 47 is 2.47 The lower and upper bounds of the 99% Confidence Interval for this sample is 3.386 to 4.136 3.245 to 4.277 .516 375

Explanation / Answer

The statistical software output for this problem is:

One sample T summary confidence interval:
? : Mean of population

99% confidence interval results:

Hence,

99% confidence interval:

3.245 to 4.277

Option B is correct.

Mean Sample Mean Std. Err. DF L. Limit U. Limit ? 3.761 0.17680847 16 3.2445811 4.2774189

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