General the germination rate
A seed company claims that its variety of seeds has a 90% germination rate. For a sample of 800 seeds, 700 germinated. Can we conclude at the 0.05 level that in general the germination rate is less than 90%?
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How would you explain the analysis of variance, assuming that your audience has not had a statistics class before?
What is the final task after completing the analysis of significant results? Why is the size effect useful at this stage?
In an inertia welding experiment, a sample of 50 welds were tested. The sample mean and sample standard deviation of the breaking strengths of these welds were found to be 94 ksi (thousand pounds per square inch) and 3 ksi, respectively.
High-Potassium Foods Potassium is important to good health in keeping fluids and minerals balanced and blood pressure low. High-potassium foods are those that contain more than 200 mg per serving.
The following table details the experiences of participating men and women. The data below are years of death or years of last contact for men and women. Estimate the survival functions for each treatment group using the Kaplan-Meier approach
Find the maximum likelihood estimator of theta, and observe that it is a function of this geometric mean.
A chemist who has prepared a product designed to kill a particular type of insect wants to evaluate the kill rate of her preparation.
If a wildlife service wishes to estimate the mean number of days of hunting per hunter for all hunters licensed in the state during a given season, with a bound on the error of estimation equal to 2 hunting days at 95% confidence,
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