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The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 16 people reveals the mean yearly consumption to be 60 gallons with a standard deviation of 20 gallons.
a. What is the value of the population mean? What is the best estimate of the value?
b. Explain why we need to use t distribution. What assumption do you need to make?
c. For a 90 percent confident interval, what is the value of t?
d. Develop the 90 percent confidence interval for population mean.
e. Would it be reasonable to conclude that the population mean is 63 gallons?
Find the probability of committing a type I error.
The average speed of greyhound dogs is about 18.8 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 45 dogs, they ran, on average, 19.2 meters per second with a standard de..
Sample size of only 20. Find out a 95% confidence level for population Cp.
The number of standard errors that the sample estimate (p 1 - p 2 ) of (p1 - p2) falls from its null hypothesis value of zero is called
Assume a customer has a two-attribute value function for cars: cost and quality. Cost can range from $5,000 to $10,000 and quality can range from 0 to 10 (a higher score is better).
A class has 13 women and 18 men. If student if selected randomly, determine the probability student is a woman?
You just saw an ad on television that states the majority of the population would vote to make smoking illegal. The poll that is referenced shows 53% of those asked supported making smoking illegal.
Given that the mean of 100 observations is 42.5 and that their standard deviation is 6.313, find the sum of the squares of the observations.
Can we conclude that car size is dependent on marital status? YES or NO (circle one)
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
Here are the DMS odor thresholds for 10 untrained students:
How might variance and standard deviation be applied to a real-world business-related problem? Provide a specific application in which these measures are useful.
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