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Make a scatter diagram and compute the correlation for the given data.
The following data are based on information on the information from Domestic Affairs. Let X is the average number of employees in a group health insurance plan and let y be the average administrative cost as a percentage of claims.
X
3 7
15 35
75
Y
40 35
30 25
14
(A) Make a scatter diagram and draw the line you think best fits the data (B) Would you say the correlation in low, moderate or strong? Positive or Negative (C) Use a calculator to verify that x = 135, x 2nd = 7133, y =2nd =4674, and xy=3040. Compute r. As x increases, does the value of r imply that y should tend to increase or decease? Explain
Determine the probability the transmission will break down between 100,000 and 200,000 miles?
Determine odds student gets more than 14 questions correct? Determine the odds student gets exactly 12 questions correct?
Plot a scatter diagram of the results with Depth of Water as the independent variable.
Compute mean, standard deviation, coefficient of variation and 5 key percentiles for these data.
If campaign can be expected to also to rise the probability of best case scenario to 0.4, is it a good investment.
Findout either the given correlation is significant at given level of significance. Illustrate what does sample size have to do with the significance of r.
A confidence interval increases in width as:
Categorize the events as dependent or independent. Events A and B where P (A) = 0.7, P (B) = 0.8, and P (A and B) = 0.56.
What is the probability that all tree students pick a different card?
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
What is the probability of selecting a female or an accounting major? Which rule of addition did you apply?
Suppose that a researcher does a study to see how level of anxiety (A 1 = low, A 2 = medium, A 3 = high) is used to predict exam performance (Y).
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