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Question: Twelve individuals want to form a committee of four.
(a) How many committees are possible?
(b) The 12 individuals consist of 5 biologists, 4 chemists, and 3 physicists. How many committees consisting of 2 biologists, 1 chemist, and 1 physicist are possible?
(c) In the setting of part (b), if all committees are equally likely, what is the probability the committee formed will consist of 2 biologists, 1 chemist, and 1 physicist?
Reconsider Prob. 20.7-4. Ben Swanson now has decided to use the exponential smoothing method to forecast future sales of washing machines, but he needs to decide on which smoothing constant to use. Using an initial estimate of 24, apply this metho..
a engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 130
Number of students who graduate College every year is Normal Distribution with mean = 400 and standard deviation 50. Find probability that this year between 300 and 500 students will graduate College.
consider a random sample of size n from a poisson distribution xi poim.a find the crlb for the variances of
the pulse rate per minute of adult males is normally distributed with a mean of 72 and a standard deviation of 12. if
a. Formulate a linear programming model for this problem. b. Solve the model by using the computer.
In a random sample 1040 consumers, you find 35% have stopped buying the product. At alpha=0.04, do you have enough evidence to support the claim?
you want to test a research centers claim that less than 35 of college applications are submitted online. a hypothesis
Do the data indicate that the lengths of one supplier's 2x4's are subject to more variability than those of the other supplier? Assume α = 0.05. (HINT: F Test for Differences in Two Variances)
Translate the following arguments into symbolic form and use the first four rules of inference to derive the conclusion of each.- If the drug interdiction program is strengthened only if cocaine becomes more readily available, then either the numbe..
A survey by KRC Research for U.S. News reported that 37% of people plan to spend more on eating out after they retire.
A tire manufacturer wants to estimate the average number of miles that may be driven on a tire of a certain type before the tire wears out.- Give a 99% confidence interval for the average number of miles that may be driven on a tire of this kind.
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