Confidence interval estimate for the proportion

Reference no: EM1316915

Below is a printout of a confidence interval estimate for the proportion of the clients who are female using the 108 data points. Do a sample of 20 data points. Use 20 random numbers that is below, to select the files.

Confidence Interval Estimate for the Mean
Data
Sample Size	108
Number of Successes	64
Confidence Level	95%
Intermediate Calculations
Sample Proportion	0.592592593
Z Value	-1.95996398
Standard Error of the Proportion	0.047280351
Interval Half Width	0.092667785
Confidence Interval
Interval Lower Limit	0.499924807
Interval Upper Limit	0.685260378

1. When would you use hypothesis testing and when would you use confidence intervals?

2. In news articles on surveys and polling, there usually is a statement on the margin of error. This is another term for the significance level. In few sentences describe one that you have seen either on TV or in newspapers or magazines.

Reference no: EM1316915

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