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Suppose that a player is a 75% shooter in the first throw and a 80% shooter in the second if the first one is scored, but a 50% shooter in the second if the first one is missed. What is his average percentage for the second shot? Are the first and second shots independent?
Choice of exponential smoothing constant w has little or no effect on forecast values using exponential smoothing.
The mean score for freshman on an aptitude test at a certain college is 800 with a standard deviation of 50. That is the probability that two groups of students selected at random, consisting of 36 and 49 students, respectively, will differ in the..
To test the effectiveness of a new studying strategy, a teacher randomly divides a sample of 8 students into tow groups, with n = 4 in each group.
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
Find the sample mean and find the sample standard deviation - construct a confidence interval for the true population mean for body temperatures of healthy adults.
Is the difference in mean scores large enough to be important? (d) Is it reasonable to assume equal variances? (e) Carry out a formal test for equal variances at α = .05, showing all steps clearly.
You are looking at two used cars at a dealership. They are both the same year, make, model, color and price. You decide to ask the salesman which is more reliable.
Construct the confidence interval to find the estimated margin of error. Then find the sample mean and you are given the sample mean and sample standard deviation. Use this information to construct the 90% and 95% confidence interval for the popula..
Determine the Conclusion: Assume that you obtained a p-value less than your selected value for alpha, provide a conclusion about your research hypothesis.
a modified roulette wheel has 40 slots. one slot is 0 another is 00 and the others are numbered 1 through 38
gender of childrena. if a couple plans to have eight children find the probability that they are all od the same
Based on these data, determine the 95 percent confidence interval estimate for true population mean?
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