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For a box of 5 green, 3 black and 2 red balls, you randomly pick 2 balls without replacement. Green, black and red balls are worth 1, 2 and 3 points respectively. What is the expected value of your point?
1.) A doctor claims that the standard deviation of systolic blood pressure is 12 mmHg. A random sample of 24 patients found a standard deviation of 14mmHg. Assume the variable is normally distributed. At a=0.01, what are the critical chi square..
the following questions all focus on definitions and concepts. you can easily answer each of these questions without
Average run length. To control the quality of a manufactured product, samples of the product are taken at specified inspection time periods and a quality.
What sample size is required for a maximum error of estimation of 10 for a population whose standard deviation is 40 using a confidence interval
The student is studying education, is 0.8. What is the conditional probability that the student is studying education, given that she is a woman?
You are concerned that first administration of attitudes measure may create pretest sensitization, thereby directly affecting participants attitudes. Explain how you could redesign the experiment to see whether pretest sensitization occurred.
Teen smoking. The Centers for Disease Control say that about 30% of high-school students smoke tobacco (down from a high of 38% in 1997).
1. What do pump manufacturers recommend to users to avoid pump cavitation? 2. Name six rules that will control or eliminate pump cavitation.
When is it appropriate to use a t-test for independent means? What is meant by the term "independent groups"? Does the t-test for independent means require that certain assumptions are met? What is meant by the term "degrees of freedom"
please show how you solve thisreducing wrinkles. of course the eason for durable press treatment s to reduce wrinkling.
the blood pressure measurements of a single patient were taken by twelve different medical students and the results are
a comparison between the average jail time of bank robbers and car thieves yielded the following results in yearsn180
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