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In a bag there are 20 marbles. The colors of the marbles are as follows: red - 5; blue - 8; green - 3; yellow - 4.
a. What is the probability of selecting a red marble?
b. What is the probability of selecting a blue marble?
c. What is the probability of selecting a pink marble? None
d. What is the probability of selecting a blue and then a red marble if the blue marble is not replaced?
e. Is the probability of selecting blue and then a red the same as the probability of selecting a red then a blue?
f. Which marble is the most likely to get selected?
Understand autocorrelation and multicollinearlity in reference to the following questions. What type of regression is it common in? When is it likely to occur? What is its negative impact? How do we see if it exists? If found, how is it eliminated..
At 5% level of significance, does this sample prove violation of guideline that average patient must pay no more than $250 out-of-pocket? Write your hypotheses and decision rule.
Compute the optimal production quantities for the company?
The mathematics SAT scores of the seven students in a mathematics seminar are 533, 553, 578, 586, 619, 626, and 633. Suppose that the student with the score of 533 drops the seminar and is replaced by a student with a score of 765.
Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?
The random variable x is known to be uniformly distributed between 70 and 90. The probability of x having a value between 80 to 95 is
What is the appropriate procedure to test a significant difference in means between the two groups? Use the critical -value method.
What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio
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A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 20 hours, with a standard deviation of 5.5 hours
Compare two models. Model #1 has an r-squared of .55 and an adjusted r-squared of .50. Model #2 has an r-squared of .52 and an adjusted r-squared of .51. Given this information, what model should you use?
The study compared the number of Hm-2 gene mutations in each group. The data table is below.
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