SOLUTION: Approximately 70% of all small businesses in Canada have a web site. 10 small businesses were randomly selected to see how many of them have a website. Assume a binomial distributi

Question 1191084: Approximately 70% of all small businesses in Canada have a web site. 10 small businesses were randomly selected to see how many of them have a website. Assume a binomial distribution for the following questions.
Round all final answers to 3 decimal places.
(a) What is the number of independent trials?

(b) What is the probability of success during one independent trial?

(c) What is the probability that exactly 5 of the businesses will have a website?

(d) What is the probability that at least one of the businesses has a website?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
10 independent trials
constant probability of success of 0.7 for each
exactly 5 is 10C5*0.7^5*0.3^5=0.1029=0.103
at least one business is 1- p(0) businesses.
p(0)=0.3^10=0.0000059
so the probability that at least one has a web site is 1.0, rounded from 0.999994
RELATED QUESTIONS
Searches related to Approximately 60% of all small businesses in Canada have a web site.... (answered by ikleyn)

Approximately 60% of all small businesses in Canada have a web site. 8 small businesses... (answered by ikleyn)

Can you please help me with this question. Question 2. Approximately 60% of all small... (answered by ikleyn)

Please help....I've been trying to figure this problem out all afternoon and I have... (answered by stanbon)

An economist wishes to estimate the proportion of all businesses in the state that employ (answered by robertb)

A random sample of 75 printers discovered that 25 of them were being used in small... (answered by JimmyJW)

A random sample of 70 printers discovered that 25 of them were being used in small... (answered by Edwin McCravy)

in the past year, 13%of businesses have eleminated jobs. if five businesses are randomly... (answered by ewatrrr)

Question 1 Consider the following results from a survey of small businesses: SECTOR (answered by stanbon)