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Construct the 95 percent confidence interval for the difference between the two population means.
The U.S. Department of Transportation provides the number of miles that residents of the 75 largest metropolitan areas travel per day in a car. Suppose that for a simple random sample of 50 Buffalo residents the mean is 22.50 miles a day and the standard deviation is 8.40 miles a day, and for an independent simple random sample of 40 Boston residents the mean is 18.60 miles a day and the standard deviation is 7.4 miles a day.
a. What is the point estimate of the difference between the mean number of miles that Buffalo residents travel per day and the mean number of miles that Boston residents travel per day? ________
b. What is the 95 percent confidence interval for the difference between the two population means? (m1,m2) ________
Find out the finite population correction (FPC).With a population size of 1,000 and a planned sample size of 200, what is the finite population correction.
Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15.
Explain the strength of relationship between the assets?
Develop a hypothesis to investigate this problem based on the claim of the heat pump manufacturer
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?
When the names of all the students at Omega University were dropped to a fishbowl, they would include:
Compute the variance and standard deviation of the number that will arrive within two days.
Solve the equations using linear algebra
The grade point averages for 10 randomly selected high school students are listed below. Assume the grade point averages are normally distributed.
The weight of a product is normally distributed with a standard deviation of .5 ounces. What should the average weight be if the production manager wants no more than 5 percent of the products to weight more than 5.10 ounces.
If the population mean is estimated within two days, how many salespeople should be sampled?
Use Excel and the data to test whether the mean alcohol expenditures for UCM students is equal to that of SBU students using a 1 % level of significance.
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