Assume that the time spent online by customers is normally distributed with a mean of 35 minutes and a standard deviation of 5 minutes. Find:
- the probability a customer spends less than 30 minutes on the site
- the probability a customer spends more than 44 minutes on the site
- the probability a customer spends between 32 and 40 minutes on the site
- the amount of time in minutes spent on the site by no more than 5% of all customers.
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