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1. The probabilities of the events A and B are .20 and .30, respectively. The probability that both A and B occur is .15. What is the probability of either A or B occurring?
2. Let P(X) = .55 and P(Y) = .35. Assume the probability that they both occur is .20. What is the probability of either X or Y occurring?
he population consists of all 15 year olds living in the attendance district of a local high school. You plan to obtain a simple random sample of 200 such residents by using the roster of the high school as the sampling frame.
6. Assuming that the distribution of Mental Health scores for men is normal, where are 99% of the men's mental health scores around the mean in this distribution? Round your answer to two decimal places.
consider a line of regression that fits data points showing crime rate and population for all u.s. cities with
in addition martinez has decided that there should be at least six ads on tv or radio or some combination of those two.
suppose a compact disk cd you just purchased has 8 tracks. after listening to the cd you decide that you like 4 of the
the table below displays data the first bank of silverhaven fbs has collected on the personal savings accounts of its
Compare two models. Model #1 has an r-squared of .55 and an adjusted r-squared of .50. Model #2 has an r-squared of .52 and an adjusted r-squared of .51. Given this information, what model should you use?
Based on this information, determinethe probability that specific fare will exceed $15.00?
a manufacturing company is interested in predicting the number of defects that will be produced each hour on the
Six vitamin and three sugar tablets identical in appearance are in a box. One tablet is taken at random and given to Person A. What is the probability that Person A was given a vitamin tablet?
A random sample of 36 cars showed a mean repair cost of $330, with a standard deviation of $120. What can you tell the city fathers?
The table below gives the loan requests (in thousands of dollars) for the past 12 months. Would you say that the local business economy is heating up or cooling down? Explain your answer. Graph the data.
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