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

Question

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

anonymous · Answer

use 4 decimal places

roadjester · Answer

Is this a guassian distribution?

anonymous · Answer

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

roadjester · Answer

@Hero It's a statistics question...well from what I can tell. I think that's why there are numbers.

I am not good at statistics however but there is a statistics study group.

roadjester · Answer

I believe Hero interpreted your question literally.

hero · Answer

I know what kind of question it is.

roadjester · Answer

And I don't think the sarcasm is appreciated. I certainly wouldn't. This isn't a place for jokes or mockery.