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100 * (1-p) is how confident we are the treatment groups actually differ. Example p=0.02 indicates we are 98% sure that the differences we observed in our experiment were caused by the treatments. What does p=0.6 indicate? The treatments probably made no difference. Let"s redesign the Steak experiment so that in addition to 4 packaging methods, we have two storage temperatures -- Low, High. We have 16 steaks available. How do we randomly assign them?
How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 0.04 with 98% confidence?
Assume a random sample of 16 gasoline stations is selected and their mean cost for regular gasoline is computed. What is the standard error of the mean in this experiment?
Lengths of his classes are uniformly distributed between 45.0 and 55.0 minutes. Determine the probability that the given class period run less than 51.5 minutes.
Assuming that Richard guesses on all eight questions, find the indicated probabilities. What is the probability that he will answer all questions correctly?
The standard deviation of the sample is 5. find the best point estimate of the mean. find the 95% condidence interval of the mean score for all golfers.
The statewide incidence of gonorrhea is 50 per 100,000 over a 3 month period. Is the number of gonorrhea cases in this county unusual for this time period?
Decision rule which chooses alternative associated with smallest maximum opportunity loss is?
If five of the recommended stocks will increase in value over the next year, determine the probability that at least half of the stocks selected by the client will increase in value over the next year. Explain.
In the following questions, you should demonstrate your understanding of sampling distribution:
Explain the difference between independent samples and dependent samples. Classify the following as independent or dependent samples:
A silver dollar is flipped twice. Calculate the probability of each of the following occurring:
Suppose we have the following information from a single regression: What is the coefficient of determination? What is the correlation coefficient?
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