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In an integrative research review of an intervention s effectiveness, which statement is true of an inclusion statement limiting studies to randomized experiments? (Assuming some have been done)
a. This could be a source of bias
b. This is a good way to evaluate effectiveness of the intervention.
c. This helps evaluate risk as well as effectiveness
d. This is a good way to get at acceptability of the intervention to patients
Angela works as a quality supervisor. She has uncovered a quality issue with safety brackets on baby swings. Angela determines that 21% of the safety brackets are out of spec.
With a population standard deviation of $7810. Use α = 0.01 to test the researcher's theory. Assume wages in this industry are normally distributed, determine the 99% confidence interval of the population mean.
a company is criticized because only 17 of 48 executives at a local branch are women. the company explains that
One-way random effects model : yi j = + i + i j , i j "s are independent error terms with N(0, 2 ), i are independent N(0, 2 ), And i and i j are independent Why?
A sample of 40 new baseball with mean of 92.67 and standard deviation of 1.79 does it have a mean hieght that is less than a ball with a mean of 92.84
Repeating this experiment many times with different samples, what values for the sample means would be possible? What values would repeat more often?
This yields 4 conditions: normal, mean (0 for errors, constant within treatment), constant variance and independent. B)(3) From the output given, are the assumptions in part a) satisfied?
The sample mean is 50, the t-critical value is 1.96, and the standard error of the sample mean is 2.
given a standardized normal distribution with a mean of 0 and a standard devication of 1 determine the following
The weights of adult male beagles are normally distributed with a mean of 25 pounds and a standard deviation of 3 pounds. A beagle is randomly selected. Find the probability that the beagle's weight is less than 23 pounds.
As of 2012, the proportion of students who use a MacBook as their primary computer is 0.36. You believe that at your university the proportion is actually greater than 0.36. If you conduct a hypothesis test, what will the null and alternative hypo..
suppose that the null hypothesis is h0 micro 1000 and the alternative hypothesis h1 micro 6 1000. assuming sigma
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