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Question: Seventy percent of the light aircraft that disappear while in flight in a certain country are subsequently discovered. Of the aircraft that are discovered, 60% have an emergency locator, whereas 10% of the aircraft not discovered have such a locator. Suppose a light aircraft disappears while in flight.
(a) What is the probability that it has an emergency locator and it will not be discovered?
(b) What is the probability that it has an emergency locator?
(c) If it has an emergency locator, what is the probability that it will not be discovered?
Suppose P(X = 1) = p and P(X = 0) = 1 - p = q. Find the mean, variance, and standard deviation of X in terms of p and q.- For what values of p (and q) is the variance of X greatest?
Conduct a one-tailed test aimed at proving that the percentage of popular recommendation of physicians is larger in small towns than in large metropolitan.
If the standard deviation remains at s = 0.04, to what value must the manufacturer change the mean adhesion of the locomotive to reduce its proportion.
If x is a binomial random variable where n = 100 and p = .1, find the possibility that x is less than or equal to 10 using the normal approximation to the binomial.
Use this information to find the upper and lower limits of the first class if you wish to construct a frequency distribution with 10 classes.
a four stroke eight cylinder otto engine operates at 2500 rpm and the compression ratio is 61. the cylinder volume is
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the diameter of the dot produced by a printer is normally distributed with a mean diameter of 0.002 inch. suppose that
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At the .01 significance level, can we conclude that there is more variation?
Many organizations are regionally and geographically diverse, and there can be challenges when training needs occur.
The researchers hypothesized that leadership ability will increase at a decreasing rate with assertiveness. Set up the null and alternative hypothesis to test this theory.
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