Posted: November 26th, 2016
Using this result, please estimate the confidence interval for the population mean for the cord blood lead level in all newborns, assuming a 95% level of confidence.
Sample size n | Mean | St. Deviation s | |
Housewives | 12 | 6.85 | 3.27 |
Working Mothers | 14 | 11.16 | 3.22 |
Total | 26 |
Please, determine the confidence interval for the difference in the mean in both groups, and decide, if the population mean difference is statistically significant or not.
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