# statistics

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The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph)

B. what is the probabilty that a diver stays under for the less than 53 minutes?
c.what is the probabilty that a diver stays under between 25 and 50?

d. what is the probabilty that a diver stays under for more than 52 mintues?

e.find the cutoff number for the middle 50% of the time a diver stays down?

f.find the top 15% of time the diver stays down?

g. find the bottom 20%of the time a diver stays down?

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