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Problem 1: There are three boxes. Box 1 contains one white ball and two black balls; box 2 contains two white balls and one black ball; box 3 contains two white balls and two black ones. Someone selects one ball randomly from each box. So totally, three balls are taken out from three boxes. Find the probability that there are exactly one white ball among selected 3 balls.
a professor wishes to recruit 2 students for a research project. the probability that a student will accept the
six students three boys and three girls lineup in a random order for a photograph. what is the probability that the
in a test of the effectiveness of garlic for lowering cholesterol 42 subjects were treated with garlic in a processed
Solve different inventory control problems using an appropriate OR method.
A random sample of 100 students who took a statistics exam were asked their score on the exam. The mean score on the test was 50; the standard deviation was 10. The scores are normally distributed.
A correlation coefficient computed for n=18 and a=0.10 is r=0.692. . Using the t -test for the correlation coefficient, what are the critical values?
She wants to be 95% confident that her estimate is correct. If the standard deviation is $1050, how large a sample is needed to be accurate within $200?
max z 3x 9ysubject to 20x 32y 16004x 2y 240y 40x y 0at the optimal solution what is the amount of slack
condeacute nast traveler magazine conducts an annual survey of its readers in order to rate the top 80 cruise ships in
The daily numbers of calls received by the Internal Revenue Service office in July are shown below:
Use a 0.01 level of significance to test for the evidence of improvement in the life expectancy of the batteries. Use the critical value criterion in your decision making. What is the p-value of the test? Draw your conclusion using the p-value crit..
the mean income per person in the united states is 37500 and the distribution of incomes follows a normal distribution.
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