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The resulting p-value from a one-way ANOVA 0.11 based on a sample of over 1000 patients. The level of significance was pre-defined to be 0.10. Which of the following is true? Select all that apply.
Describe these distributions by writing a few sentences comparing the duration of hospitalization for men and women.- Can you suggest a reason for the peak in women's length of stay?
(a) State H0 and Ha. (b) Find the criticalvalue(s) and use it to determine the rejection region. (c) Find the standardized test statistic t.
A random sample of 100 computers showed a mean of 115 gigabytes used with a standard deviation of 20 gigabytes. What is the standard error of the mean?
Suppose in the problem above, that the two teams are evenly matched and each has probability 1/2 of winning each game. Find the expected number of games played.
an epidemiologist found five cases of big toe cancer in the yukon territory. because there were only a few cases the
One school district whose dropout rate has always been very close to the national average reports that 210 of their 1782 high-school students dropped out last year. Is their experience evidence that the dropout rate may be increasing? Explain.
A point estimate for a parameter is a single number designed to estimate a quantitative parameter of a population, usually the value of the corresponding sample statistic
A correlation coefficient computed for n=18 and a=0.10 is r=0.692. . Using the t -test for the correlation coefficient, what are the critical values?
Choose a variable. Before collecting the data, decide what a likely average might be, then complete the following: Write a brief statement of purpose of the study
Compute a confidence interval for the difference in population means and assume x is normally distributed in the populations and the variances of the populations are approximately equal.
Based on benchmarking with comparable facilities in similar metropolitan areas, is it feasible currently to achieve a C-section rate of 10%?
News reports claimed this study proved that swimming can prevent depression. Explain why this conclusion is not justified by the study. Include an example of a possible confounding variable.
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