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The wait times in line at a grocery store are roughly distributed normally with an average...

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? What will the probability look like before you find the values on the z table? (Hint: to get something off the z table it must be in the form P (z< +a))

P (z> 0.67)

P (z<0.4)

P (z< 0.57)

P (z< 0.17)

math   Statistics-And-Probability   
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Note-if there is any understanding problem regarding this please feel free to ask via comment box..thank you

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