A test consists of 10 true/false questions. To pass a test, the student must answer at least six questions correctly. If a student guesses on each question,
a. What is the probability that the student will pass the test?
b. What is the probability that the student answers at least one question correctly
Answer:
a. 0.337
b. 0.999
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STATS
- The percentage rates of home ownership for 8 randomly selected states are listed below. Assuming that the percentage rates follow a normal distribution, construct a 99% confidence interval for the population standard deviation for the percentage rate of home ownership. Interpret your results.
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- Find the area under the standard normal curve to the right z = 1.92.
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- Andrew asked seven of his friends how many cousins they had. The results are listed below. Find the Mean, Median, Range, Variance and Standard Deviation of the sample data. Round to tenths. 15, 12, 5, 14, 4, 4, 6
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