The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.54 minutes and a standard deviation of 1.91. Find the probability that a randomly selected individual will take less than 6 minutes to select a shoe purchase. Is this outcome unusual?

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4VA. Calculating normal probabilities(Links to an external site.) (2:18)

4DF.Probabilities from Normal DistributionsLinks to an external site.Open this document with ReadSpeaker docReader (DOCX)

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Probability is 0.09, which is unusual as it is less than 5%

Probability is 0.09, which is usual as it is not less than 5%

Probability is 0.91, which is usual as it is greater than 5%

Probability is 0.91, which is unusual as it is greater than 5%