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A person must score in the upper 2% of the population on an IQ test to qualify for member ship in Mensa, the international high-IQ society. If IQ scores are normally distributes with a mean of 100 and a standard deviation of 15, what score must a person have to qualify for Mensa?
Suppose you have the experiment of flipping a coin three times.
Records also point to that interviewing committee of bank officers approves 85% of individuals they interview. Determine probability that Ann's loan request is approved.
Decision making using the Transportation method.
In an article entitled "Fuel Economy Calculations to Be Altered," James R. Healey indicated that the government planned to change how it calculates fuel economy for new cars and trucks.
What statement can you made by using the rule of three, about the proportion p, of all its computers which are defective?
Calculate the value of the chi-square statistic and test whether all regions are statistically the same at 5% and 1% level tests.
Hypothesis test for the difference between two means - To make the data comparable, certain features, such as the deductible amount and limits of liability, are standardized.
Find the power of the test designed to determine if the the new safety equipment is effective when the mean percent reduction is actually 2.3%. Assume that the population standard deviation is 12% and that α is 0.02. What is the power?
According to Bienayme-Chebyshev rule, what percentages of these funds are likely to be within ±2 standard deviation of mean?
Perform a proper analysis. Describe your null and alternative hypothesis, report the p-value. What is your conclusion?
Assume if the students toss the coin 200 times each about 68% should have proportions among what two numbers.
What is the likelihood all four of the selected flights arrived within 15 minutes of the scheduled time?
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