Sixty percent of consumers prefer to purchase electronics online. You randomly select 8 consumers. Find the probability that the number of consumers who prefer to purchase electronics online is (a) exactly five, (b) more than five, and (c) at most five.

Step-by-step explanation:

a. This a binomial probability distribution problem expressed as:

#Given the probability of success, p=0.60 and the number of trials, n=8, the probability of exactly 5 purchases is calculated as:

Hence, the probability of exactly 5 purchases is 0.2787

b. Given n=8 , p=0.60, the probability of more than 5 purchases is calculated as:

Hence, the probability of more than 5 purchases is 0.3154

c. The probability of at most 5 purchases is equivalent to 1-P(x>5) and is calculated as:

#From b above, P(X>5)=0.3154;

Hence, the probability of at most 5 purchases is 0.6846

the first one, all those points on the line just make a strait line.

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

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