The wait times in line at a grocery store are roughly distributed normally with an average wait time of 7.6 minutes and a standard deviation of 1 minute 45 seconds. What is the probability that the wait time is less than 7.9 minutes
Added by Jordi B.
Step 1
The average wait time is given in minutes, but the standard deviation is given in minutes and seconds. We need to convert the standard deviation to minutes. 1 minute 45 seconds = 1 + 45/60 = 1.75 minutes So, the standard deviation is 1.75 minutes. Show more…
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