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1 The leading brand od dishwasher has a 30% market share. A sample of 25 dishwasher detergent customers was taken. What is the probability that 10 or...


I need my answer in excel, some are random variables and discrete probability distributions. i need my tomorrow at 5pm 


1 The leading brand od dishwasher has a 30% market share. A sample of 25 dishwasher

 

detergent customers was taken. What is the probability that 10 or fewer customers

 

chose the leading brand?

 

2 A student majoring in accounting is trying to decide on the number of firms to which he

 

should apply. Given his work experience and grades, he can expect to receive a job offer

 

from experience and grades, he can expect to receive a job offer from 70% of the firms

 

to which he applies. the student decides to apply to only four firms. What is the

 

probability that he receives no job offers?

 

3 In the united states votes who are neither democrat nor republican are called

 

independent. It is believed that 10% of all voters are independent. a survey asked 25

 

people to identify themselves as democrat, republican, or independent.

 

a- What is the probability that none of the people are independent?

 

b- What is the probability that fewer than five people are independent?

 

c- What is the probability that more than two people are independent?

 

4- major software manufactures offer a help line that allows customers to call and receive

 

assistance in solving their problems. However, because of the volume of calls, customers

 

frequently are put on hold. One software manufacturer claims that only 20% of callers are put

 

on hold. Suppose that 100 customers call. What is the probability that more than 25 of them are

 

put on hold?

 


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