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For households in a community, many different variables can be observed or measured. If y = monthly mortgage payment, x = annual income would probably be directly related to y.
For y = monthly mortgage payment, provide an example of an x variable likely to be (a) directly related to y, (b) inversely related to y, and (c) unrelated to y.
q1. if you use a 0.10 level of significance in a two-tail hypothesis test what is your decision rule for rejecting a
Suppose the systolic blood pressure X and fasting blood sugar Y are jointly distributed as bivariate normal in some population with means 120 and 105, standard deviations 10 and 20, and correlation 0.7. Find the average fasting blood sugar of thos..
Seven employees were included from Area A, 9 from Area B and 12 from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level?
Can someone please break these problems down so that I can understand how to get the correct answer.
What is the probability that next years annual maximum negative return exceeds all previous negative returns? In other words, what is the probability that next years maximum negative return is a new record?
question 1 consider the following four data sets of 4 observations eachset 1 1010 1011 1012 1013set 2 11 10 9 8 set 3 5
the weather forecast for tomorrow indicates that there is a 70 chance that there will be a high wind speed. the
Estimate demand for the next four weeks using a four-week moving average as well as simple exponential smoothing with a = .01. Evaluate the MAD, MAPE, MSE, bias and TS in each case. Which of the two methods do you prefer? Why?
Determine the estimated mean of the following frequency distribution. A sample of the amounts paid for parking on Saturday at the Downtown Parking Garage in Toronto was organized into the following frequency distribution.
the following data are collected as part of a study of coffee consumption among undergraduate students. the following
Explain why a strong correlation would be found between weekly sales of firewood and weekly sales of cough drops over a 1-year period. Does the strong correlation mean that one variable causes the other?
a clothing store chain is having a sale based on the use of a coupon. the company is interested in knowing whether the
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