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Is there a significant different in the level of community service participation between college and high school graduates? According to GSS 2010, 38% of 160 college graduates reported volunteering in the previous month compared with 29% of 210 high school graduates.
a. What is the research hypothesis? Should you conduct a one- or a two- tailed test? why?
b. Present the five-step model, testing your hypothesis at the .05 level. what do you conclude?
Income from continuing operations sometimes includes gains from nonoperating activities.
A company has 18,000 employees. The file containing the names is ordered by employee number from 1 to 18,000. If a sample of 100 employees is to be selected from the 18,000 using systematic random sampling, within what range of employee numbers wi..
Develop percent frequency distribution and construct bar chart and pie chart.
If a college includes a minimum score of 1050 among its requirements, what percentage of females do not satisfy that requirement?
the arrival of cars at a toll booth can be modeled by a poisson pro- cess. between 1100am and 1200pm cars arrive at an
1.a set of ten cards consists of five red cards and five black cards. the cards are shuffled thoroughly and i am given
Assume that demand for services per period is Pt = 1000 - Qt where Qt is the stock of the durable consumed. Let the discount factor for consumers and the firm be given by δ. Find the profit-maximizing prices and outputs for a durable goods monopol..
(a) How many subjects are needed to estimate the HDL cholesterol within 2 points with 99% confidence assuming σ=14.2? (b) Suppose the doctor would be content with 90% confidence. (c) How does the decrease in confidence affect the sample size require..
Calculate the correlation coefficient and test for significance and calculate the Pearson product-moment correlation coefficient and test for significance
Find the particular solution of the following differential equation: 12(d^2y/dt^2)-3y=0 given that when t=0, y=3 and dy/dt=0.5 and could you explain the reasons for choosing y=e^(rt)
36% of women consider themselves fans of professional baseball. You randomly select six women and ask each if she considers herself a fan of professional baseball.
each year ratings are compiled concerning the performance of new cars during the first 90 days of use. suppose that the
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