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1) A machine has 9 identical components which function independently. The probability that a component will fail is 0.2. The machine will stop working if more than three components fail. Find the probability that the machine will be working.
2) An airline estimates that 98% of people booked on their flights actually show up. If the airline books 76 people on a flight for which the maximum number is 74, what is the probability that the number of people who show up will exceed the capacity of the plane?
A process has a capability index of 0.40. This index is interpreted to mean that the process is:
She has a history of being successful at getting a donor on 55 percent of her calls. If June has a quota to get at least four donors each day.
What is the best prediction for the number of products sold based on advertising costs of $7000?
Compute the variance and standard deviation
At a = 0.05, can you reject claim that at least 52% of adults are more probable to purchase a product when there are free samples?
The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.
Determine the average score for ERAU graduates? Determine the value of test statistic? Significance level?
Suppose that a researcher does a study to see how level of anxiety (A 1 = low, A 2 = medium, A 3 = high) is used to predict exam performance (Y).
Determine the values of mean M and standard deviation s for original sample?
The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds.
Given that the student you choose is a senior, find out the probability of selecting a non-senior?
Questions based on binomial distribution, variance of the binomial distribution, discrete random variable and continuous random variables.
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