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# 95% Confidence Interval

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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.

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##### Solution Summary

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.

##### Solution Preview

N=64
M=12.3
SD=5.0
Then standard error = SD/SQRT(N)= 5/SQRT(64)=0.625
For 95% ...

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.