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The accompanying data indicate the number of mergers that took place in an industry over a 19-year period.
Year Mergers Year Mergers Year Mergers
1 23 8 64 14 150
2 23 9 47 15 165
3 31 10 96 16 192
4 23 11 125 17 210
5 32 12 140 18 250
6 32 13 160 19 300
7 42
a) Fit a least squares trend line to the merger data.
b) What type of trend (linear or curved) might best fit to this time series?
c) Compute the forecast for year 20 based on the trend (linear or curved) that best fits the data?
A health researcher is interested in determining whether or not the speed at which people walk is related to their cholesterol levels. He picks 100 adult volunteers at random, checks their cholesterol levels, and then times each one while they wal..
What is the probability of selecting an accounting major, given that the person selected is a male?
Describe the circumstances under which you should use ANOVA instead of t tests, and explain why t tests are inappropriate in these circumstances. Find a peer-reviewed article that reflects these circumstances, describe the research conducted (i.e...
In terms of the standard scores for both sections, the score of which section was better? What are the z-scores for both sections?
Assuming that the first digit cannot be a zero, compute the number of possible outcomes when the digits can be repeated.
Determine the mean for list of numbers. 6, 5, 9, 4, 14, 9 (Round to the nearest tenth)
What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?
Using the original data, estimate the population standard deviation with 90% probability.
Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample approximately half the size.
In the last municipal election, a sample of 350 registered voters showed that 85 voted for the incumbants. Find out a 98% confidence interval estimate for the proportion of all voters voting for the incumbants.
The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
The weekly demand for a product follows a normal curve with an average of 1000 units and a standard deviation of 200 units. In how many weeks during a typical 52-week year would be above 800 units?
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