Posted by mary on .
a basketball scout randomly selected 144 players and timed how longeach player took to perform a certain drill. The times in the sample were distributed with a mean of 8 mins. The population standard deviation was known to be 3 minutes. Using a 95% confidence interval, estimate the population mean of drill times

statistics 
PsyDAG,
95% = mean ± 1.96 SEm
SEm = SD/√n