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Question: consider a population consisting of the number of teachers per...

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Consider a population consisting of the number of teachers per college at small 2-year colleges. Suppose that the number of teachers per college has an average μ = 190 and a standard deviation σ = 15.

(a) Use Chebyshev's Rule to make a statement about the minimum percentage of colleges that have between 145 and 235 teachers. (Round your answer to two decimal places if necessary.)
Correct Answer: 88.9

(b) Assume that the population is mound-shaped symmetrical. What proportion of colleges have less than 205 teachers?

I need help with letter B please. Thank you in advance :)

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