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Albert Pujols of the St. Louis Cardinals had the highest batting average in the 2003 Major League Baseball season. His average was .359. Assume the probability of getting a hit is .359 each time he batted. In a particular game, he batted three times.
(a) What is the probability of not getting any hits in a game?(b) What is the probability of getting three hits in a game?(c) What is the probability of getting at least one hit in a game?
I was recently told that I tested positive for a rare (only affects 1 in 10,000 people) and fatal disease (no known cure or treatment). When we were told the news, my wife was devastated - me, not so much. I asked the doctor how accurate the test is. He indicated it is 98% accurate - when you have the disease, the test is positive 98% of the time and when you do not have the disease, the test is negative 98% of the time. Calculate the probability I have the disease given I have tested positive forthe disease (hint: the answer is NOT 98%).
Basic concepts. For each of the following, answer the question and give a short explanation of your reasoning.
You are responsible for planning the parking needed for a new 256-unit apartment complex, and you're told to base the needs on the statistic "average number of vehicles per household is 1.7."
The test has a reliability of .87 and a standard deviation of 5. Joe scored a 57 on the test and Jill scored a 62. Is Jill clearly superior to Joe? Explain your answer.
78 percent of the males attended college. A management trainee is selected at random. What is the probability that the person selected is a female who did attend college?
Five persons donate blood at the clinic on a particular day. Find the probability that at least one of the five does not have Rh+ blood.
Let x be a random variable that represents the commute time of teachers in a large urban area. If x is normally distributed with a mean of 46 minutes and a standard deviation of 5 minutes, find the commute time which is at the top of the bottom 25..
A particular fast food restaurant is located near a University. 40% of the customers are students. Students prefer the spicier items.
How certain they were about their choice of major. Research question: At α = .01, is the degree of certainty independent of credits earned?
A standard deviation of mg/dL. What is Mrs. Brown's cholesterol level? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
There is not enough information to answer the question, the formula requires knowing the population standard deviation for Mark and Debbie, and we were not given this information.
True mean number of years to retirement of its employees to within one month of the true mean and with 90% confidence if the range of the data is 7 years?
15% were contaminated with salmonella, and 13% were contaminated with both of these bacteria. What is the probability that a tested chicken chosen at random is: contaminated with salmonella and not campylobacter.
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