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Explain what the coefficient of determination, R^2 (R-squared), measures. How is it related to the sample correlation coefficient?
The following data show the cost of electricity during August 2010 for a random sample of 50 one-bedroom apartments in a large city:
Assuming that the dogs did better than what would be expected with random guessing, did they do well enough to be used for actual medical diagnoses? Why or why not?
Explain the effect outliers can have on the analysis of the center of this data set. Based on the box-plot and histogram you created for problem 1, do there appear to be any outliers?
Iit is known that signal change in this brain area is normally distributed with mean of 35 and standard deviation of 10. By using .01 level, what must researcher conclude?
Determine the sum of these probabilities , and why is the number less than 1
What is the probability that the police will strike and the firefighters will not? What is the probability that the firefighters will strike and the police will not?
The Graduate Management Admission Council, who administers the test, claims that the mean total score is 529. Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 Use α = .05..
Construct a probability for the number of students in the sample who watch soap operas.
Assume then money spent is uniformly distributed between these amounts. Determine the mean amount spent on insurance?
The number of items rejected daily by a manufacturer because of defect for the last 30 days are 22, 21, 8, 17, 25, 20, 18, 19, 14, 13, 11, 6, 21, 23, 4, 19, 11, 12, 16, 16, 10, 28, 24, 6, 21, 20, 25, 5, 17, 9. Complete this frequency table for the..
A random sample of n = 16 scores is selected from a normal distribution with a mean of μ = 50 and standard deviation of σ = 10. a) What is the probability that the sample mean will have a value between 45 and 55?
Based on the data, determine the 95 percent confidence interval evaluate for true population mean?
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