Question: 4 and 5 Please show all work ! Thank you! 4. The average lifespan for a cricket is 90 days, with as standard deviation of

4 and 5 Please show all work ! Thank you!

4. The average lifespan for a cricket is 90 days, with as standard deviation of 13 days. If we assume that the lifespan of a cricket is normally distributed, a. What is the probability a randomly selected cricket has a lifespan of less than 75 days? b. What is the probability a randomly selected cricket will have a lifespan between 80 and 120 days? c. What is the probability a randomly selected cricket will have a lifespan of more than 100 days? 5. Using the above information on the lifespan of a cricket to determine the age at which a cricket would be among the oldest 5% of all crickets

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