P-value for this hypothesis test
A fair coin is tossed 20 times and x=6 heads are observed. Let p=P(head). A test of Ho:p=.5 versus Ha: p<.05 is to be performed based upon the results of the 20 tosses. What is the p-value for this hypothesis test?
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Steve and his friends are relaxing at a local tavern. The number of drinks that Steve's table receives is Poisson distributed with an average of 9 drinks per 3 hours. Write out the distribution and parameters you are using in each part below.
If an exercise scientist wants to estimate the proportion of American adults who exercise for 30 minutes three or more times per week. He wants to construct a 90% confidence interval with a margin of error of 1%.
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It is estimated that 56% of the children between the ages of 3 and 5 years are already enrolled in school. In a sample of 150 children what is the probability that exactly 100 are enrolled in school?
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A multiple-choice test consists of 77 questions with possible answers of a, b, c, d, e. Estimate the probability that with random quessing, the number of correct answers is at least 33.
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