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A processor of carrots cuts the green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test the weight of the boxes, a few were checked. The mean weight was 20.4 pounds, the standard deviation 0.5 pounds. How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
He randomly samples 45 oil wells throughout the United States and determines the mean output to be 10.7 barrels per day with a standard deviation of 1.3 barrels. Test the researcher's claim at the .025 level of significance.
What is the probability that the mean price for a sample of 30 service stations is within $.03 of the population mean (to 4 decimals)?
Now assume institutional cache is used. Hit rate for cache is 0.6. Determine the total average response time.
Suppose that this is a simple random sample of adult residents of Maine.
A random sample of eight cars from each manufacturer is selected, and eight drivers are selected to drive each automobile for a specified distance.
Confirm that these statements are accurate by finding the geometric mean rate of increase.
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
A researcher used stepwise regression to create regression models to predict Birth-Rate (births per1000) using five predictors:
Based on the scatter diagram, does there appear to be any relationship between the number of assemblers and production? Explain.
Find out the Expected value of the perfect information for the given problem. Given the subsiquent cost tree, illustrate what is the expected outcome.
Determine odds student gets more than 14 questions correct? Determine the odds student gets exactly 12 questions correct?
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
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