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In determining automobile mileage? ratings, it was found that the mpg in the city for a certain model is normally? distributed, with a mean of 37mpg and a standard deviation of 1.7 mpg. Suppose that the car manufacturer samples five cars from its assembly line and tests them for mileage ratings.
a. What is the distribution of the mean mpg for the? sample?
b. What is the probability that the mean mpg of the sample will be greater than 39 mpg?
c. What is the probability that the mean mpg of the sample will be less than 35.5 mpg?
d. The distribution is going to be normal, triangular, uniform or exponential?
the genes for eye color in a certain male fruit y are r w. the genes for eye color in the mating female fruit fly are r
In the North American court system, a defendant is assumed innocent until proven guilty. In an ideal world, we would expect that the truly innocent will always go free, whereas the truly guilty ones will always be convicted.
When addressing a conflict involving two employees, your investigation concludes that one member is innocent and the other person is guilty and caused.
We assume that the population is approximately normally distributed. Find the confidence interval: for a confidence level of 95%:
Munching Froot Loops Kellogg's Froot Loops cereal comes in six fruit flavors: orange, lemon, cherry, raspberry, blueberry, and lime.
A higher-education management consultant wanted to see whether a university computer help desk had sufficient resources to assist faculty with computer.
Other things remaining the same, which of the given will result in an increase in the p-value?- Increase in sample size.
A small town has a population of 20,000 people. Among these, 1,000 regularly visit a popular local bar. A sample of 100 people who visit the bar is surveyed for their annual expenditures in the bar.
The football coach randomly selected ten players and timed how long each player took to perform a certain drill. The times (in minutes) were: 11 8 8 10 11 9 9 14 8 5 Find a 95% confidence interval for the population standard deviation Η
Analyzing remote-sensing data to identify type of land cover. Geographers use remote sensing data from satellite pictures to identify urban land-cover.
The vast majority of the world uses a 95% confidence in building confidence intervals. Give your opinion on why 95% confidence is so commonplace.
Many companies use sampling to determine whether a batch should be accepted. A (n, c) sampling plan consists of inspecting n randomly selected items from a batch and accepting the batch if c or fewer sampled items are defective.
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