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PROBLEM 1
Items coming off a production line are categorized as good (G), slightly blemished (B), and defective (D), and the percentages are 80%, 15% and 5%, respectively. Suppose that two items will be randomly selected for inspection and the selections are independent.
a) List all outcomes and assign probabilities.
b) Find the probability that at least one of the items is slightly blemished.
c) Find the probability that neither of the items is good.
The point estimate for the difference between the proportions is:
Test hypothesis that calories of two populations are equal. Illustrate all steps of the hypothesis testing process. Points will be deducted for missing parts.
The mathematics SAT scores of the seven students in a mathematics seminar are 533, 553, 578, 586, 619, 626, and 633. Suppose that the student with the score of 533 drops the seminar and is replaced by a student with a score of 765.
Joe is considering pursuing an MBA degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 25% for University A and 40% for University B.
Suppose you, as the manager of Tennessee Grilled Pork. would like to ensure you have enough cleaning staff for your dining room and would like to analyze data for customers who enter the restaurant to place and order and either eat in the restaura..
Make a forecast for 2004, using either the fitted trend model or a judgment forecast. Why is it best to ignore earlier years in this data set?
Can we conclude from this that most workers there earn between $25 and $35 per hour? Is this the right interpretation for the margin of error?
Use the Empirical Rule to estimate the proportion of costs within two standard deviations of the mean. What are these limits?
A sample of 350 lenses and found 5 lenses with surface defects. Formulate an appropriate test for the qualification of the polishing machine using an α = 0.05."
Give the Z- score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected
It is known that 60 percent of all registered voters in the 42nd congressional District are Republicans. There registered voters are selected at random from the district. Compute the probability that exactly 2 of the 3 selected are Republicans, u..
Choose an American driver at random and let the random variable X be the number of speeding tickets the driver has received in the last two years. The discrete probability distribution of X is shown.
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