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Economists often track unemployment trends by measuring the proportion of people who are "underemployed," meaning they are either unemployed or would like to work full time but are only working part-time. In the summer of 2010, 18.5% of Americans were "underemployed." The mayor of Statsville wants to show the voters that the situation is not as bad in his town as it is in the rest of the country. His staff takes a simple random sample of 300 Statsville residents and finds that 43 of them are underemployed. What is the test statistic for this hypothesis test?
We cannot say because the condition for randomness, independence, or normality is not met.
suppose that a health expert has claimed that 17 of college students smoke cigarettes. to investigate this claim
In fitting the simple linear regression model Yi ~ N (α + β xi, σ 2 ) to the following data:
an investor estimates that there is a 75 chance that a particular mutual funds price will increase to 100 per share
in a test of effectiveness of garlic for lowering cholesterol 42 subjects were treated with garlic in a processed
If the analyst finds evidence that the boast of dealership A is correct. What will be your critical value? What is the value of the test statistic? the boast of dealership A is correct?
suppose we wanted to compare the somatic complaints as shown on a scale known as pss of 3 groups of people non-smokers
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? State the null hypothesis and the alternate hypothesis.
a point is chosen at random from the region s in the xy-plane containing all points xy such that -4 lt x lt 4 -1 lt y
A Federal funding program is available to low income neighborhoods. To qualify for the funding a neighborhood must have a mean household income of less then $15,000 per year.
lily estimates that her time to fall asleep each night is approximately exponentially distributed. it takes her an
Heights of college-aged women are approximately bell-shaped and symmetric, with almost all of them (95%) falling between 58" and 72". Find the approximate values of the mean and standard deviation.
How would you find normal approximation to the binomial probability in part a? please show how you would calculate mean and standard deviation in form for normal approximation to the binomial and show the final form you would use w/o going through..
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