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Explain whether to use paired T-test or independent?
In 1993 the British Medical Journal published an article titled, "Is Friday the 13th Bad for Your Health?" Researchers in Britain examined how Friday the 13th affects human behavior. One question was whether people tend to stay at home more on Friday the 13th. The data below are the number of cars passing Junctions 9 and 10 on the M25 motorway for consecutive Fridays (the 6th and the 13th) for five different months in which the 13th occurred on a Friday. Compute the difference in traffic counts on the 6th and the 13th. Can you conclude that people tend to stay home more on Friday the 13th?
Year Month 6th 13th1990 July 134,012 132,9081991 September 133,732 131,8431991 December 121,139 118,7231992 March 124,631 120,2491992 November 117,584 117,263
Are there any formulas or graphs for Correlational statistical procedures and Quantative research methods? I'm writing a paper and would like to throw in a few examples with explanation.
Test whether the weight reducers on average will lose less than 10 pounds using P-value approach.
Explain briefly and in nontechnical language what "a significant difference (P
Why can not we just do several two sample tests like we did in the last week. In your own words explain briefly also tell us what these are and what did it mean.
Estimate the values using multiple regression models. An air conditioning as well as heating repair firm conducted a study to determine if the outside temperature, Illustrate the forecasted monthly electric bill.
Determine the first two cumulants also the ratio between the standard deviation and average energy. Explain why distribution becomes extremely narrow.
Calculate a 95% confidence interval for the mean endowment of all the private colleges in the United States assuming a normal distribution for the endowments.
What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?
When n = 250, determine the probability that proportion of couples in sample who are racially or ethnically mixed will be greater than 0.07?
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable-one three digit number wins $600 and all others win nothing-that gamblers never reach "the long run".
Conduct a 3-period moving average, an exponential smoothing forecasting using an alpha of .25, and a seasonal forecast with 3 seasons.
Given that alarm has just sounded, find out the probability that real emergency situation exists?
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