SOLUTION: A marketing manager makes the statement that the long-run probability that a customer would prefer the deluxe model to the standard model is 30%. 1.2.1 What is the probability th

Question 876213: A marketing manager makes the statement that the long-run probability that a
customer would prefer the deluxe model to the standard model is 30%.
1.2.1 What is the probability that exactly 3 in a random sample of 10 customers will
prefer the deluxe model? (3)
1.2.2 What is the probability that more than 2 in a random sample of 10 customers
will refer the standard model?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi

p(prefer deluxe) = .30,  n = 10

P(x = 3) = 10C3)(.30)^3(.70)^7  0r  normalpdf(10, .3, 3) = .2668

P( > 2)= 1 - normalcdf(10, .3,1) = .6172

Recommend stattrek.com to check Your TI result (until You trust it:) 

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