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In a linear programming problem, the binding constraints for the optimal solution are:
5x1 + 3x2 = 30
2x1 + 5x2 = 20
Which of these objective functions will lead to the same optimal solution?
2x1 + 1x2
7x1 + 8x2
80x1 + 60x2
25x1 + 15x2
At a probability of type 1 error of 0.05, test the claim that the assistant professors earn more than $42000 per year. the standard deviation of the population is $5230.
For given population of high school seniors, the schoolastic aptitude test (SAT) in mathemathics has mean score of 500 with the standard deviation of 100.
Sample data recently collected indicate that Dough Boy's crusts average 30 centimeter in diameter, with a standard deviation of 1.1 centimeters.
Nicotine patches are often used to help smokers quit. Does giving medicine to fight depression also help? A randomized double blind experiment assigned 244 smokers to receive nicotine patches and another 245 to receive both a patch and the antidep..
About 10% of all adults deliberately do a one-time fling and feel no guilt about it. In a group of 7 adult friends, what is the probability that: No one has done a one-time fling.
An experiment is set to test the hypothesis that a given coin is unbiased. The decision rule is the following: Accept the hypothesis if the number of heads in a sample of 200 tosses is between 90 and 110 inclusive, otherwise reject the hypothesis.
The mean and standard deviation of these scores are 23.0 and 5.0 respectively. The test was administered to 100 students. What is the T-score equivalent to the raw-score 13?
A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 925 hours. A random sample of 39 light bulbs has a mean life of 905 hours with a standard deviation o 55 hours.
According to the Internal Revenue Service, the mean tax refund for the year 2007 was $ 2,708. Assume the standard deviation is $ 650 and tha the amounts refunded follow a normal probability distribution.
question a random sample is taken from a population. the data points are 5 4 9 2 1a what is the mode?b calculate the
For each of the following research questions does the situation or research question involve independent samples or paired data
Their average age was 19.1 years with a standard deviation of 1.5 years. What is the 95% confidence interval for the population mean?
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