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95% Confidence Interval

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<br>Then standard error = SD/SQRT(N)= 5/SQRT(64)=0.625
<br>For ...

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Find the 95% confidence interval for the average time spent waiting for a prescription to be filled at Rex's Rx Center if a random sample of 64 customers showed an average waiting time of 12.3 minutes with a standard deviation of 5.0 minutes.

Please show all work and give a detailed explanation of answer. Thank you.