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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
 2 years ago
order Group Title
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
 2 years ago

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

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

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

amorfide Group TitleBest ResponseYou've already chosen the best response.0
this 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
 2 years ago

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

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

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

guykubpom Group TitleBest ResponseYou've already chosen the best response.0
but 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
 2 years ago

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

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

guykubpom Group TitleBest ResponseYou've already chosen the best response.0
hang in there lol
 2 years ago
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