AQA Statistics 1 4.06 Normal Distribution: Probability of an Exact Value

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Комментарии
Автор

Thanks man, I was confused about this but not any more!

hackercop
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Thank you, I already knew it was zero, but the way my teacher made the question makes me doubt my answer so I had to look it up.

lamputateur
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Please help, I confornt this book info confusion. QUESTION D and its aswer


57. The Orange County Register, as part of its Sunday health supplement, reported that 64 percent of American men over the age of 18 consider nutrition a top priority in their lives.
Suppose we select a sample of 60 men. What is the likelihood that:
a. 32 or more consider nutrition important?
b. 44 or more consider nutrition important?
c. More than 32 but fewer than 43 consider nutrition important?
d. Exactly 44 consider diet important?
AWS
57.
a. ....mean, sd....
b. 0.0853, found by (43.5 - 38.4)/3.72 = 1.37, for which the area is 0.4147. Then 0.5000 - 0.4147 = .0853.
c. 0.8084, found by 0.4441 + 0.3643
d. 0.0348, found by 0.4495 - 0.414

anthonyng
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One person has put two cars on sale, one red and the other blue, considering the probability of selling red is 0.70, blue is 0.50 and selling both is 0.35, what would be the probability of That one of the cars is sold and that exactly one of the cars is sold?


I'm not sure how to get the exact probability, would it be 0?-

blossomdreamss
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In a exam, will i need to show working out for this type of question? or is simply writing the answer acceptable?

Mxxrij
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Jack can I use the grid method for this?

harnekanand