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 2 years ago
In Scotland in November on average 80% of days are cloudy. Assume that the weather on any one day is independent of the weather on other days.
(i) use normal approximation to find the probability of there being fewer than 25 cloudy days in Scotland in Novermber (30 days).
 2 years ago
In Scotland in November on average 80% of days are cloudy. Assume that the weather on any one day is independent of the weather on other days. (i) use normal approximation to find the probability of there being fewer than 25 cloudy days in Scotland in Novermber (30 days).

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order
 2 years ago
Best ResponseYou've already chosen the best response.0I used binomial contribution, which gave an exact answer, but I have to use the normal distribution to get an approximation. Any idea?

amorfide
 2 years ago
Best ResponseYou've already chosen the best response.0best i can help is by giving you this http://www.khanacademy.org/ scroll down to statistics

order
 2 years ago
Best ResponseYou've already chosen the best response.0I know you have to use np and npq, but I have no clue how, and this site doesn't help much... sorry!! :(

amorfide
 2 years ago
Best ResponseYou've already chosen the best response.0this site is very helpful but you can not expect everyone to have been taught the same things as you... we will help when we can but we can't help if we have no knowledge of it... just keep bumping your question until someone answers

amorfide
 2 years ago
Best ResponseYou've already chosen the best response.0until then use khanacademy to learn

guykubpom
 2 years ago
Best ResponseYou've already chosen the best response.0what is the answer you got from binomial contribution??

guykubpom
 2 years ago
Best ResponseYou've already chosen the best response.0ummm I give up sorry lol

guykubpom
 2 years ago
Best ResponseYou've already chosen the best response.0but fewer than 25 days is 24 days which is 80 percent of 30 days so it should be 0.5 if 24 days is a mean idk I get confused

order
 2 years ago
Best ResponseYou've already chosen the best response.0the end answer should be 0.590

order
 2 years ago
Best ResponseYou've already chosen the best response.0but don't know how to get to that.
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