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Three hundred people apply for three jobs. 100 of the applicants are women.
(a) If three persons are selected at random, what is the probability that all are women?
(b) If three persons are selected at random, what is the probability that two are women?
(c) If three persons are selected at random, what is the probability that one is a woman?
(d) If three persons are selected at random, what is the probability that none is a woman?
suppose the flow of current (milliamps) in wire strips of a certain type under specified conditions can be modeled with a normal distribution having mean=20 and standard deviation=1 what is the proportion of strips will have the current flow of be..
Use the Normal curve approximation to the binomial distribution. Two percent of hair dryers produced in a certain plant are defective.
a plane flies 400 miles with the wind and 320 miles against the wind in the same length of time. If the speed of the wind is 29 mph, what is the speed of the plane in still air?
Which of the following is not an ethical concern for the statistical researcher?
Last season, a pair of jeans cost $44.95. This season, the price of the jeans increased by 15 percent. Later in the season, the jeans were put on sale for 15 percent off.
the dimensions of a rectangle are such that its length is 3 in more than its width. if the length were doubled and if the width were increased by 1 in, the area would be increased by 104 in what are the length and width of the rectangle?
How many permutations are there of 12 objects taken five at a time? How is this answer related to answers in 1 and 2?
Finding the occurrence of the supernova using the information provided in the problem - devise and execute a strategy for finding out when the supernova actually occured, relative to when the chinese astronomers saw the explosion.
A hollow cone is cut by a plane parallel to the base and the upper portion is removed. if the volume of the frustum obtained is 26/27 of volume of the cone. find at what height above the base the section is made, if height of the cone is 30cm
Find the p-value associated with the test of hypothesis
The gestation time for human babies is assumed to be normally distributed with a mean of 278 days and a standard deviation of 12 days. What happens to the standard deviation of the sampling distribution of the sample mean as n increases?
A light-year is a measure of length equal to the distance that light travels in 1 year. Compute the conversion factor between light-years and meters, and find the distance to the star Proxima Centauri 4 1016 m in light-years.
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