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A company orders bolts in bulk from a vendor. The contract specifies that a shipment of bolts will be accepted by testing the null hypothesis that the percentage defective in the shipment is not more than 3% at an α of 5% using random sampling from the shipment. The company further wishes that any shipment containing 8% defectives should have no more than 10% chance of acceptance.
a. Find the minimum sample size required.
b. For the sample size found in the previous question, plot the OC curve.
c. For the actual percentage defective varying from 6% to 10% and ß varying from 8% to 12%, tabulate the minimum sample size required.
The historical reports from two major networks showed that the mean number of commercials aired during prime time was equal for both networks last year.
The 2010 Chevrolet Camaro with an eight-cylinder engine and automatic transmission has a combined gas mileage of 19 mpg. What percent of all vehicles have better gas mileage than the Camaro?
listed below are the amounts of mercury in parts per million or ppm found in tuna sushi in different stores. the sample
computer services inc. wants to determine a confidence interval for the average cpu time of their teleprocessing
Historically, my HRV fleet averaged 40,000 miles between breakdowns with a 8000 mile standard deviation. I implemented Continuous Improvement teams to research better inspection methods and after the kaizen, I sampled, randomly 30 HRV cars and found ..
Maximal static inspiratory pressure (PImax) is an index of respiratory muscle strength. The following data show the measure of PImax (cm H2O) for 15 cystic ?brosis patients.
Downs and Abwender (2002) evaluated soccer players and swimmers to determine whether the routine blows to the head experienced by soccer players produced long-term neurological deficits.
1. What is your recommendation to the president based on expected value that maximizes profits (EMV). 2. Provide a second recommendation to the president that minimizes regret.
If you randomly assign participants to groups, can you suppose the groups are equivalent at the beginning of the study?
you complete a hypothesis test using o= .05 and based on the evidence from the sample your decisions to fail to reject the null hypothesis. if the treatment actually does have an effect, which of the following is true?
Suppose that the scores of architects on a particular creativity test are normally distributed.
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
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