Of 1,050 randomly selected adults, 360 identified themselves as manual laborers, 280 identified themselves as non-manual wage earners, 250 identified themselves as mid-level managers, and 160 identified themselves as executives. In the survey, 82% of manual laborers preferred trucks, 62% of non-manual wage earners preferred trucks, 54% of mid-level managers preferred trucks, and 26% of executives preferred trucks. We are interested in finding the 95% confidence interval for the percent of executives who prefer trucks. Which distribution should you use for this problem? (Round your answers to two decimal places.
Of 1,050 randomly selected adults, 360 identified themselves as manual laborers, 280 identified themselves as non-manual wage earners, 250 identified themselves as mid-level managers, and 160 identified themselves as executives. In the survey, 82% of manual laborers preferred trucks, 62% of non-manual wage earners preferred trucks, 54% of mid-level managers preferred trucks, and 26% of executives preferred trucks.
We are interested in finding the 95% confidence interval for the percent of executives who prefer trucks. Which distribution should you use for this problem? (Round your answers to two decimal places.)
Confidence interval :
A confidence interval may be a vary of estimates for Associate in Nursing unknown parameter in statistics, outlined as Associate in Nursing interval with a lower and bound.
The interval is calculated at a such level of confidence.
Although the 95% confidence level is that the most usual, alternative levels area unit often used.
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