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Briefly explain the difference between correlation and causation in terms of a relationship between X and Y.
Research and briefly describe a real world example about how acid rain affects plants. Be sure to demonstrate how pH contributes to the outcome
A manufacturer claims that the mean lifetime, mean, of its light bulbs is 52 months. The standard deviation of these lifetimes is 7 months. Ninety bulbs are selected at random, and their mean lifetime is found to be 55 months.
What is the standard deviation of following scores. There are 31 scores and need standard deviation for sample.
Consider the dollar value (in thousands) of gifts returned to each of your department stores after the holiday season (Table).
The underlying data are in file XR10033. Identify and interpret the p-value for the test. Using the 0.025 level of significance, what conclusion will be reached?
As a counselor in the field of addiction, you are interested in researching if online gambling is becoming more prevalent. You decide to conduct research to compare online gambling to gambling in public places such as casinos.
Three are selected, at random, without replacement from the batch. What is the probability that the third is not defective given that one of the previous two are defective?
The sales potential of each of these firms is about one-tenth of Big Industries. Knowing that your sales manager expects results
Let the following linear programming problem: Determine the optimal solution to this problem. Convert this problem standard LP form.
A quarter is bent so that the probabilities of heads and tails are 0.40 and 0.60. If it is tossed twice, what is the covariance of Z, the number of heads obtained on the first toss, and W, the total number of heads obtained in the two tosses of t..
a producer of staplers has received a forecasted demand of 10000 staplers for the coming month. fixed costs are 11545
Refer to Exercise, including the information given in part (c). Which of the given could be specified before the samples are taken? Explain.
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