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1) A sample of 100 elements produced a mean of 48 and a standard deviation of 8. The 99% confidence interval for the population mean is:
2) Suppose the population standard deviation = 8. The appropriate sample size for estimating the true population mean within 2 units with 95% confidence level is approximately
Which of the following is a major difference between the binomial and the hypergeometric distributions?
Solve the differential equation, 12y=by-4y' writing the solution as y as a function of x (isolating y).
q1 a basketball coach claims that by taking a special vitamin a weight lifter can increase his strength. eight
The standard error of the estimate (standard error) is the estimated standard deviation of the distribution of the independent variable and in Regression Analysis if the variance of the error term is constant, we call it the Heteroscedasticity prope..
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
Set up null hypothesis for associated F test.
Use the following graph of a function f to determine x or y to the nearest integer as indicated. Some problems may have more than one answer.
a researcher wanted to investigate whether there was a difference in satisfaction ratings in an assisted living
What is the null and alternative hypothesis? What is your final conclusion?
The following is the number of minutes to commute from home to work for a group of automobile executives.
To determine the public's opinion of the police department, the police chief obtains a cluster sample of 15 census tracts within his jurisdiction and samples all households in the randomly selected tracts. Uniformed police officers go door to door..
Identify a business research topic and define the research questions for the identified problem or opportunity
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