In a study of 200 accidents that required treatment in an emergency room, 80 occurred at work. Find the 90% confidence interval of the true proportion of accidents that occurred at work.
Answer to relevant QuestionsDefine null and alternative hypotheses, and give an example of each. Explain the difference between a one-tailed and a two-tailed test. State whether the null hypothesis should be rejected on the basis of the given P-value. a. P-value = 0.258, α = 0.05, one-tailed test b. P-value = 0.0684, α = 0.10, two-tailed test c. P-value = 0.0153, α = 0.01, ...Ten years ago, the average acreage of farms in a certain geographic region was 65 acres. The standard deviation of the population was 7 acres. A recent study consisting of 22 farms showed that the average was 63.2 acres per ...The average 1-year-old (both genders) is 29 inches tall. A random sample of 30 1-year olds in a large day care franchise resulted in the following heights. At α = 0.05, can it be concluded that the average height differs ...
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