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Suppose a 95% confidence interval for the mean salary of college graduates in a town in Mississippi is given by [$36,815, $43,185]. The population standard deviation used for the analysis is known to be $13,000.
What is Margin of error?
What is sample size?
Assume that sigma = 60, choose an alpha level, and perform a hypothesis test to determine whether this is good evidence to conclude that the mean score for all young men is less than 275.
If he makes a profit of 50 cents on each cup of coffee and 40 cents on each doughnut, can he reasonably expect to have a day s profit of over $300? Explain.
let x and y be independent geometric distributions. u minxy v x - ya show that u and v are independentb find the
In a survey to identify of risk factors for heart disease among men and women were asked about if they ever smoke. Of the 430 men, 116 said they smoke. Of the 380 women, 73 said they smoke. What is the proportion for smoker for men
a data set consists of 83 test scores. over a long period it has been found that the mean and standard deviation for
A research report concludes that there are significant differences among treatments, with "F(2, 24) = 8.62, p
Two popular over-the-counter antacids are compared to determine which brand is preferred. Three hundred subjects are randomly selected then divided into two groups of 150 each, and given one of the two antacids.
the father of a junior high school student wants to determine the most popular book among junior high students. select
a two-factor study with two levels of factor a and three levels of factor b uses a separate sample of n 5 participants
There are three hospitals in the Tulsa, Oklahoma, area. The following data show the number of outpatient surgeries performed at each hospital last week.
How did the Greeks and Aristotle justify violence and torture against slaves explain this?
A random sample of n=100 observations is selected from a population with mean of 29 and sandard deviation of 21. Approximate the probabilities shown below
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