SOLUTION: A company is taking a survey to find out
whether people like its product. Their last survey indicated
that 70% of the population like the product. Based on that,
of a sample of
Algebra.Com
Question 164816: A company is taking a survey to find out
whether people like its product. Their last survey indicated
that 70% of the population like the product. Based on that,
of a sample of 58 people, find the probabilities of the following.
a. All 58 like the product.
b. From 28 to 30 (inclusive) like the product.
Answer by themathprof(21) (Show Source): You can put this solution on YOUR website!
You can use the normal curve as an approximation to the binomial.
mean=np=58(.7)40.6
p=.7; n=58 q=1-p=.3
a) becomes p(57.5
correction for continuity
b) becomes p(27.5
change x's to z's, use table of standard
normal curves areas
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it has hundreds of problems like this worked
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