In the Gregorian calendar, each year has either 365 days (a normal year) or 366 days (a
Chapter 4, Problem 2(choose chapter or problem)
In the Gregorian calendar, each year has either 365 days (a normal year) or 366 days (a leap year). A year is randomly chosen, with probability 3/4 of being a normal year and 1/4 of being a leap year. Find the mean and variance of the number of days in the chosen year.
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