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Question: During 9 surveys throughout the past decade, the apartment vacancy rates in Minneapolis (in percentage) were found to be 4.9, 6.3, 5.7, 4.4, 3.0, 3.6, 3.8, 6.1, and 4.5, respectively. Assume that the measurements represent a random sample from a normal population, find a 95% prediction interval for the apartment vacancy rate in Minneapolis during the next survey.
If the computer manufacturer decides to sample 2,300 of the microchips received in each shipment, what acceptance number, c, would they want?
Normally distributed with a mean of 852 and a standard deviation of 143. The proportion of days when at least 800 cars pass through the intersection is about?
The data collected was for each car for each type of fuel. Performance was measured in miles per gallon. Perform an ANOVA test and state the results.
(a) Write the fitted regression equation, (c) What is your conclusion about the slope.
For the other 25 percent of the population, the drug has no effect on colds. If an individual tries the drug for a year and has 2 colds in that time, what is the probability that the drug is beneficial to that individual?
What is the probability that at most five cases of E. coli per 100,000 are reported in California this year?
In Excel use the Descriptive Statistics and comment on the mean, the skewness, the standard deviation and kurtosis.
Both days have sample standard deviations of 3.4. Is the average mean of size different from day 1 to day 2?
question which is relatively better a score of 79 on a psychology test or a score of 38 on an economics test?
Based on the following results, is LIFO more effective in keeping the value of his inventory lower? Product FIFO LIFO. What is the null hypothesis?
Find out annual break-even volume for the Rolling Creek Textile Mill.
In other words, both variables have the same mean but different standard deviations. Draw rough sketches of the two normal curves on the same graph.
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