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A statistician employed by a consumer testing organization reports that at 95% confidence he has determined that the true average content of the Uncola soft drinks is between 11.7 to 12.3 ounces. He further reports that his sample revealed an average content of 12 ounces, but he forgot to report the size of the sample he had selected. Assuming the standard deviation of the population is 1.28, determine the size of the sample.
correlation between the two variables.a store manager wishes to find out whether there is a relationship between the
question during 9 surveys throughout the past decade the apartment vacancy rates in minneapolis in percentage were
The population mean height of a basketball player is 220 cm with a standard deviation of 20 cm. In a sample of 49 basketball players, what is the probability of getting a sample mean height of 215 cm or more?
Given that a particular student tests negative for stress, what is the probability that the test results are correct, and that this student is not overstressed?
a population has a mean of 300 and a standard deviation of 24. a simple random sample of 144 observations will be
assume the life of a packaged magnetic disk exposed to corrosive gases has a weibull distribution with szlig 0.5 and
consider a company that selects employees for random drug tests. the company uses a computer to randomly select
A random variable is binomially distributed with n = 16 and π = .40. The expected value and standard deviation - find the sample size to estimate the mean with an error of ± 4 and 95 percent confidence (rounded to the next higher integer).
Describe the factors that might cause variation in weight of Tootsie Rolls during manufacture.
Draw the suitable 2x2 table, compute and interpret suitable measure of association.
A sporting goods producer claims that the variance of the strengths of a certain fishing line is 15.9. A random sample of 15 spools has a variance of 21.8. At "alpha" = 0.01, can the claim be proven wrong
Compute mean yearly value using average gas prices by month found in "Final Project Data Set." Using years as your x-axis and annual mean as your y-axis, design scatterplot and linear regression line.
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