QNT/351 quiz

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The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.

Admissions	Probability
1,060	0.5
1,300	0.2
1,640	0.3

1.	What is the expected number of admissions for the fall semester?

Expected number of admissions

b.	What is the probability exactly one of the four audited had a charitable deduction of more than $1,000? (Round your answer to 4 decimal places.)

Probability

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b.	Compute the mean of the distribution of sample means and the population mean. (Round your answers to 2 decimal places.)

Sample means

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Population mean

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The mean age at which men in the United States marry for the first time follows the normal distribution with a mean of 24.1 years. The standard deviation of the distribution is 2.5 years.

For a random sample of 66 men, what is the likelihood that the age at which they were married for the first time is less than 24.6 years? (Round z value to 2 decimal places. Round your answer to 4 decimal places.)

Probability

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