Can someone please help me with this? I am getting absolutely nowhere.
How easy is it to contact a person in Sacramento, California? If you don't know the telephone number, it could be difficult. It was reported that 66% of the telephone-owning households in Sacramento have unlisted numbers. For a random sample of 146 Sacramento households with telephones, what is the probability of the following. (Round μ to the nearest integer, σ to 4 decimal places.)
(a) 100 or more have unlisted numbers
(b) fewer than 100 have unlisted numbers
(c) between 50 and 65(including 50 and 65) have listed #s

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use 4 decimal places

Is this a guassian distribution?

yh, it's under that topic, although the question doesn't mention a type of distribution

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