MATH 225N Week 6 Discussion: Confidence Interval{GRADED A}

On a busy Sunday morning, a waitress randomly sampled customers about their preference for morning beverages, Specifically, she wanted to … find out how many people preferred coffee over tea. The proportion of customers that … coffee was 0.42 with a margin of error 0.07. Construct a confidence interval for the proportion of customers that preferred coffee. 2. A company sells juice in 1quart bottles. In a quality control test, the company found the mean volume of juice in a random samp...

Initial Post Instructions Thinking of the many variables tracked by hospitals and doctors’ offices, confidence intervals could … created for population parameters (such as means or proportions) that were calculated from many of them. Choose a topic of study that is tracked (or you would like to see tracked) from your place of work. Discuss the variable and parameter (mean or proportion) you chose, and explain why you would these to create an interval that captures the true value of the param...