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Water specimens contain nitrates, a solution that is dropped into the water will cause the specimen to turn red 95% of the time. When used on water specimens without nitrates, the solution turns the water red 10% of the time. Past experience in the lab indicates that nitrates are contained in 30% of the water specimens that are sent to the lab for testing. If a water specimen is randomly selected
1. from among those sent to the lab, what is the probability that it will turn red when tested?
2. and turns red when tested, what is the probability that it actually contains nitrates?
Identify a business research topic and define the research questions for the identified problem or opportunity
Examine the effects of region of residence in northeast, south, mid-west, and west and income that is low, medium, and high
q1.a soda producer makes and sells two products classic cola and diet cola. if this company spends x1 dollars on
Suppose that you have 8 cards. 5 are green and 3 are yellow. The 5 green cards are numbered 1, 2, 3, 4, and 5. The 3 yellow cards are numbered 1, 2, and 3. The cards are well shuffled. You randomly draw one card.
The symmetric approximation and Monte Carlo risk approaches
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Let variable X represents the improvement in time for each assembly line worker. Let μ represents the average improvement in time for the population. Has the training improved the time required on the job? Please test the hypothesis use α=0.05 ..
Please read through the case scenario shown below to gain an understanding of the background information and the research study
a screening test for a newly discovered disease is being evaluated. in order to determine the effectiveness of the new
Suppose you are going to randomly order individuals A, B, C, D, E and F. The probability the order will begin A B _ _ _ _ is ____. a. 1.000 b. 0.033 c. 0.027 d. 0.000
In a simple random sample of 36 families in a certain country, you find that sample mean income to be $9,500 with a sample standard deviation of $2,500. Run a hypothesis test (α=.05) to test whether the population's mean exceeds $9,000. What is the..
What statistical test should be used to analyze these data - How can internal and external validity be increased in an experiment and briefly describe the type of information that should be in an introduction.
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