# Question: Can we use probability models based on Bernoulli trials to

Can we use probability models based on Bernoulli trials to investigate the following situations? Explain.

a) Each week a doctor rolls a single die to determine which of his six office staff members gets the preferred parking space.

b) A medical research lab has samples of blood collected from 120 different individuals. How likely is it that the majority of them are Type A blood, given that Type A is found in 43 % of the population?

c) From a workforce of 13 men and 23 women, all five pro-motions go to men. How likely is that, if promotions are based on qualifications rather than gender?

d) We poll 500 of the 3000 stockholders to see how likely it is that the proposed budget will pass.

e) A company realizes that about 10% of its packages are not being sealed properly. In a case of 24 packages, how likely is it that more than 3 are unsealed?

a) Each week a doctor rolls a single die to determine which of his six office staff members gets the preferred parking space.

b) A medical research lab has samples of blood collected from 120 different individuals. How likely is it that the majority of them are Type A blood, given that Type A is found in 43 % of the population?

c) From a workforce of 13 men and 23 women, all five pro-motions go to men. How likely is that, if promotions are based on qualifications rather than gender?

d) We poll 500 of the 3000 stockholders to see how likely it is that the proposed budget will pass.

e) A company realizes that about 10% of its packages are not being sealed properly. In a case of 24 packages, how likely is it that more than 3 are unsealed?

## Relevant Questions

Can we use probability models based on Bernoulli trials to investigate the following situations? Explain. a) You survey 500 potential customers to determine their color preference. b) A manufacturer recalls a doll because ...During the 18 years from 1995 through 2012, there were 144 hurricanes in the Atlantic basin. Assume that hurricanes are independent and the mean has not changed. a) What is the mean number of major hurricanes per year? b) ...Consider our group of 5 people from Exercise 51. a) How many lefties do you expect? b) With what standard deviation? c) If we keep picking people until we find a lefty, how long do you expect it will take? In the first quarter of 2013, a group of domestic equity mutual funds had a mean return of 6.2% with a standard deviation of 1.8%. If a Normal model can be used to model them, what percent of the funds would you expect to be ...Based on the Normal model N (100, 16) describing IQ scores from Exercise 24, what percent of applicants would you expect to have scores? a) Over 80? b) Under 90? c) Between 112 and 132? d) Over 125?Post your question