What is the probability of exactly 6 occurrences

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1-Trucks in a delivery fleet travel a mean of 90 miles per day with a standard deviation of 22 miles per day. The mileage per day is distributed normally. Find the probability that a truck drives at least 48 miles in a day. Round your answer to two decimal places.

2-A recent survey of sports fans found 61% of sports fans would not attend a major sporting event if the season was opened before a vaccine is found to prevent COVID-19. If a sample of 762 fans is taken, what is the probability that the proportion of people who would stay away will be between 58% and 64%? Assume this proportion is normally distributed.

3-The random variable is the number of occurrences of an event over an interval of 10 minutes. It can be assumed that the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number of occurrences in 10 minutes is 5.3. What is the probability of exactly 6 occurrences in 10 minutes?

Reference no: EM133035023

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