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A study of major flash floods that occurred over the last 15 years indicates that the probability that a flash flood warning will be issued is .5 and that the probability of dam failure during the flood is .33. The probability of dam failure given that a warning is issued is 17. Find the probability that a flash flood warning will be issued and a dam failure will occur. (Based on data reported in McGraw-Hill Yearbook of Science and Technology, 1980, pp. 185-186.)
Assume there are 18 homes in the Quail Creek area and 9 of them have a security system. Five homes are selected at random: what is the probability all five of the selected homes have a security system?
1*. Suppose that Xi....,Xn is a random sample of size n on X, where X has pdf f(x, = -92 X3e-2218, X> 0, and 0 is a positive parameter.
Describe a situation when you compared two variables and calculated the slope of their linear regression line. For example, you may have said that packages cost $5 to ship plus $1.50 per additional item
three years ago the mean price of a single-family home was 243800. a real estate broker believes that the mean price
System data for a job shop revealed that the average time spent by a job in the shop was approximately n = 5 working days. Construct a statistical test using a level of significance of alpha = 0.05
Investigate whether the simple genetic principle is correct by carrying out a X2 test of goodness-of-fit.
Is there a relationship between log (Wage) and Age? Compare your answer with graph (a) and identify the differences.
Happiness Using the table in Exercise , determine whether being unhappy is independent of disagreeing with the statement for this sample.
one of your companys products a flux capacitor is known to have an exponential failure time distribution with a mean
What is the probability that in any hour exactly six complaints will be received?
MS and vitamin D. Multiple sclerosis (MS) is an autoimmune disease that strikes more often the farther people live from the equator.
(a) In an attempt to determine if students prefer bottled water to tap water, you set up a table in the cafeteria at lunchtime and have students sample some of each and ask them which they prefer. (b) Researchers collect data over 15 years about 10..
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