posted by student .
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 probability of the following.
a) all 58 like the product.
for this do i do:
b) from 28 to 30 (inclusive)like the product.
for this: ?
b) Add the probabilities of getting 28, 29 and 30 out of 58 liking the product. For each case, use the binomial probability equation described at