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Proportion of all depositors who ask for cash back

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Reference no: EM131717977

Of 44 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.)

May normality of p be assumed?

Reference no: EM131717977

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