A manager at an assembly line is trying to seewhat proportion of their products are defective. The manager does a quality ceckby sampling 132 of its products. the manager finds that 16% of the 132 products are defective. Assume the proportion of defective products followed a normal distribution A- create a 80% confidence interval for the percent of defective products for the company B- interpret the confidence interval that was found for part A

A survey of 80 recent arcanum students showed that 46 were ready for summer break. Find the 95% confidence interval of the true proportion of students ready for summer break.

A study of 420,048 cell phone users found that 137 of them developed cancer of the brain or nervous system. Prior to this study of cell phone​ use, the rate of such cancer was found to be 0.0256​% for those not using cell phones. Complete parts​ (a) and​ (b).       a. Use the sample data to construct a 90​% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system.   enter your response here​%<p<enter your response here​% ​(Round to three decimal places as​ needed.) b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell​ phones? Why or why​ not?     A. No​, because 0.0256​% is included in the confidence interval.   B. Yes​, because 0.0256​% is included in the confidence interval.   C. Yes​, because 0.0256​% is not included in the confidence interval.   D. No​, because 0.0256​% is not…

In a random sample of 250 students who enrolled in Science, 150 took notes duringclasses. Find an approximate 95% confidence interval for the population proportion of students who takes notes in their Science classes.