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An Olymipic archer is able to hit the bull's-eye 80% of the time. Assume each shot is independent of the others. If she shoots 6 arrows, what's the probability of each result described below.
a. Her first bull's-eye comes on the third arrow.b. She misses the bull's-eye at least once.c. Her first bull's-eye comes on the fourth or fifth arrow.d. She gets exactly 4 bull's-eyese. She gets at least 4 bull's-eyesf. She gets at most 4 bull's0-eyes
Suppose we wish to test the hypothesis H0: = µ2 vs. H1: = µ≠2 We find a two sided p-value of .03 and a 95% CI for µ of (1.5, 4.0) Are these two results possibly compatible? Why or why not?
At the .01 significance level, is there a difference in the mean number of times men and Women order take-out dinners in a month? What is the p -value?
Determine whether the following equations have a solution or not? Apply the discriminant, are the solutions real, repeated real, or complex?
Standard deviation was 8.2 hours. What is the 95% confidence interval for the mean number of hours worked per week for the population of u.s men?
How does one find expected profit from a probability demand distribution?
Marital Status. The probability that a randomly chosen 40-year-old woman is divorced is about 0.15. this probability is a long-run proportion based on all the millions of women aged 40.
Describe the similarities between an F-ratio and a t statistic. The basic relationship between t statistic and F-ratios can be stated in an equation. What is that equation?
Are you doubtful of any of these data points? if so why does there show to be a linear relation between degree of stenosis and nuber of reactive nuclei?
What does this story say about hypothesis testing and research? What is the likelihood of this happening? There are number of safeguards in place so this should not happen.
Among 620 adults selected randomly from among the residents of one town, 18.9% said that they favor stronger gun-control laws.
At the end of a year the change in participants' blood pressure over the year was measured, and the change was compared for the two groups.
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.
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