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Question: Compute probabilities for the following compound events:
The probability of a twenty-year-old man living to age seventy is .74, and the probability of a twenty-year-old woman living to the same age is .82. If a recently married couple, both age twenty, give 8 to 1 odds on their staying married for fifty years, what is the probability that
a. At least one will live to age seventy?
b. They will celebrate their golden wedding anniversary?
A statistics student wants to predict the annual salaries of employees at one large company. He wants to know if he can use the number of years that someone has worked at the company to predict his or her annual salary.
In the belief that Statistics is too hard, a student claims that the mean score on a final exam is less then 70. 15 scores will be chosen at random to test this claim.
What is the difference between a randomized ANOVA and a repeated measures ANOVA? What does the term one-way mean with respect to an ANOVA?
Let E be the event that the number which comes up when a single die is tossed is divisible by 3. Let X be the number of times that event E occurs in 3 tosses of the die.
Its war. Naval intelligence reports that 4 enemy vessels in a fleet of 21 are carrying nuclear weapons. If 6 vessels are randomly targeted and destroyed, what is the probability that at least 3 vessels transporting nuclear weapons were destroyed?
Describe the one sample test of a mean when the variance is unknown and when the variance is known. Describe the use of a two-sample t test (common variance estimate).
a random sample of 16 csn students is taken. the average age in the sample was 27 years with a standard deviation of 4
Exercise on Inventory Pricing
Determine the p-value; and at 93.7% confidence, test the above hypotheses.
there is some evidence suggesting that you are likely to improve your test score if you rethink and change answers on a
Question 1 The following data gives X, the price charged per piece of plywood and Y, the quantity sold (in thousands).
Suppose that the life expectancy X of each member of a certain group of people is an r.v. having the Negative Exponential distribution with parameter l = 1/50 (years). For an individual from the group in question, compute the probability that
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