The records of a charitable center for the collection of used clothing and household items (for later resale) show that, on average, they receive 100 contributions daily with a standard deviation of 5 contributions daily. Use Chebyshev's theorem to determine at least what percentage of the days the contributions will number between
a) 90 and 110
b) 85 and 115
If the Empirical Rule were used to solve (a) and (b) of the previous question, would the percentages be larger or smaller? Explain (do not solve).