Questions from Statistics Principles


Q: Is the model of Bernoulli trials plausible in each of the following

Is the model of Bernoulli trials plausible in each of the following situations? Identify any serious violations of the conditions. (a) A beginning golfer tries 40 putts, 5 feet from the hole, while p...

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Q: Give an example of repeated trials with two possible outcomes where:

Give an example of repeated trials with two possible outcomes where: (a) The model of Bernoulli trials is reasonable. (b) The condition of independence is violated. (c) The condition of equal P ( S...

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Q: If the probability of having a male child is . 5,

If the probability of having a male child is . 5, find the probability that the third child is the first son.

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Q: A basketball team scores 35% of the times it gets the

A basketball team scores 35% of the times it gets the ball. Find the probability that the first basket occurs on its third possession.

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Q: If in three Bernoulli trials the probability that the first two trials

If in three Bernoulli trials the probability that the first two trials are both failures is 9/49 what is the probability that the first two are successes and the third is a failure?

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Q: The proportion of people having the blood type O-positive in

The proportion of people having the blood type O-positive in a large southern city is .38. For two randomly selected donors: (a) Find the probability of at least one type 0 . (b) Find the expected n...

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Q: A viral infection is spread by contact with an infected person.

A viral infection is spread by contact with an infected person. Let the probability that a healthy person gets the infection in one contact be p = .4. (a) An infected person has contact with six heal...

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Q: The probability that a voter will believe a rumor about a politician

The probability that a voter will believe a rumor about a politician is .3. If 20 voters are told individually: (a) Find the probability that none of the 20 believes the rumor. (b) Find the probabil...

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Q: National safety statistics suggest that about 33% of the persons treated

National safety statistics suggest that about 33% of the persons treated in an emergency room because of moped accidents are under 16 years of age. Suppose you count the number of persons under 16 amo...

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Q: In bidding for a contract to cater a large wedding, a

In bidding for a contract to cater a large wedding, a caterer expects she will have a net profit of $3000 if she wins the contract and net loss of $60 if h er bid fails. If the probability of getting...

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