In Hawaii, January is a favorite month for surfing since 60% of the days have a surf of at least 6 feet.† You work day shifts in a Honolulu hospital emergency room. At the beginning of each month you select your days off, and you pick 5 days at random in January to go surfing. Let r be the number of days the surf is at least 6 feet. What is the probability of getting 4 or more days when the surf is at least 6 feet? (Round your answer to three decimal places.) What is the probability of getting fewer than 2 days when the surf is at least 6 feet? (Round your answer to three decimal places.)
In Hawaii, January is a favorite month for surfing since 60% of the days have a surf of at least 6 feet.† You work day shifts in a Honolulu hospital emergency room. At the beginning of each month you select your days off, and you pick 5 days at random in January to go surfing. Let r be the number of days the surf is at least 6 feet.
What is the probability of getting 4 or more days when the surf is at least 6 feet? (Round your answer to three decimal places.)
What is the probability of getting fewer than 2 days when the surf is at least 6 feet? (Round your answer to three decimal places.)
What is the expected number of days when the surf will be at least 6 feet?
days
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What is the standard deviation of the r-probability distribution? (Round your answer to three decimal places.)
days
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