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An old saying in golf is "you drive for show and you putt for dough." The point is that good putting is more important than long driving for shooting low scores and hence winning money. To explore the relation between winning, putting, and driving distance, data on the top 69 money winners on the PGA tour in 1993 are used. The average number of putts per hole for each player and their average driving distance is used to predict their total winnings using the multiple regression model
where the deviations εI are assumed to be independent and Normally distributed with mean 0 and standard deviation σ. This model was fit to the data using the method of least squares. The following results were obtained from statistical software.
Based on these results, the proportion of the variation in 1993 winnings that is explained by the average number of putts per round and driving distance isA. 0.301.B. 0.549.C. -5341854 and 18491.3, respectively.
What is the probability that the mean breaking strength of the 3 untreated specimens is at least 25 pounds greater than the mean strength of the 3 treated specimens?
Researchers conducted an experiment to measure the effect of a drug on improving the quality of sleep as determined by how many more minutes of REM sleep were measured for each participant.
A neurologist wants to detect whether the mean response time for drug-injected rats differs from a control group not injected. The control group has the mean response time of 1.2 seconds.
Cables is selected and tested find the sample mean that will cut off the upper 95% of all the sample of 20 taken from the population. Assume the variable is normally distributed.
A contractor is considering a sale that promises a profit of $34,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $16,000 with a probability of 0.3. What is the expected profit?
One state lottery has 1000 prizes of $1, 200 prizes of $5, 50 prizes of $25, 15 prizes of $150, 4 prizes of $500, and 1 prize of $2500. What is the lottery expected profit per ticket?
Standard deviation of $5,000. What is the lowest salary for those individuals with an MBA degree whose starting salary is in the top 10 percent?
Determine whether the following equations have a solution or not? Apply the discriminant, are the solutions real, repeated real, or complex?
A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5.
Calculate (rounded to the nearest tenth) The correlation between IQ and Anxiety r =??
Note down a research that requires a decision making with probabilities.
Based on our sample, how do you interpret the results and what do these results suggest about the population means for male and female average salaries?
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