Of 43 bank customers depositing a check, 23 received some cash back. (a) Construct a 90 percent confidence interval for the proportion of all depositors who ask for cash back. (Round your answers to 4 decimal places.) The 90% confidence interval is from to (b) May normality of p be assumed? Yes No
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Of 43 bank customers depositing a check, 23 received some cash back.
(a) Construct a 90 percent confidence interval for the proportion of all depositors who ask for cash back. (Round your answers to 4 decimal places.)
The 90% confidence interval is from to
(b) May normality of p be assumed?
-
Yes
-
No
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- Quesiton 20A random survey of 500 students was conducted from a population of 2,200 students to estimate the proportion who had part-time jobs. The sample showed that 205 had part-time jobs. Calculate the 95 percent confidence interval for the true proportion of students who had part-time jobs. (Round your answers to 3 decimal places.) The 95% confidence interval is from tod) Construct a 90% confidence interval for Hcommunity college - Hno transfer to approximate the mean additional time it takes to complete a bachelor's degree if you begin in community college. The confidence interval is the range from to (Round to three decimal places as needed.)
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