In developing an interval estimate for a population mean, a sample of 50 observations was used. The interval estimate was 19.76 ±1.32. Had the sample size been 200 instead of 50, the interval estimate...

Extracted text: In developing an interval estimate for a population mean, a sample of 50 observations was used. The interval estimate was 19.76 ±1.32. Had the sample size been 200 instead of 50, the interval estimate would have been O A. 4.94 + 1.32 о В. 19.76 + 0.66 OC. 19.76 + 0.33 O D. 9.88 ± 1.32 In developing an interval estimate for a population mean, the interval estimate was 62.84 to 69.46. The population standard deviation was assumed to be 6.50, and a sample of 100 observations was used. The mean of the sample was O A. 13.24 о В. 6.15 о с. 56.34 O D. 62.96