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For the data in given Exercise, verify that the 0.95 confidence interval for the population 20% trimmed mean using trimpb is (11.2, 22.0)
ExerciseRats are subjected to a drug that might cause liver damage. Suppose that for a random sample of rats, measures of liver damage are found to be5, 12, 23, 24, 6, 58, 9, 18, 11, 66, 15, 8.Verify that trimci returns a 0.95 confidence interval for the 20% trimmed mean, using R, equal to (7.16, 22.84). Now use trimci to get a confidence interval for the mean, resulting in (8.50, 33.99). Why is the confidence interval substantially longer?
Problem: A bar graph showing the conditional distribution of the frequency that a teen brought a cell phone to school among schools with a given level of permissiveness would have
assignment questionsquestion 1a the following data represent the number of years patients survived after being
Thirty teeth were randomly allocated into three groups of 10 and a cavity in each tooth filled using one of three preparations. Perform Kruskal-Wallis tests for the PLP measurements. What is your conclusion
A student receives test scores of 62, 83, and 91. The student's final exam score is 88 and homework score is 76. Each test is worth 20% of the final grade, the final exam is 25% of the final grade, and the homework grade is 15% of the final grade...
Calculate (rounded to the nearest tenth) The correlation between IQ and Anxiety r =??
Find the probability that a patient truly did not have appendicitis given that the radiological determination was definite appendicitis (DA). Find the probability that a patient truly did not have appendicitis given that the radiological determin..
seventy percent of married couples paid for their honeymoon themselves. you randomly select 20 married couples and ask
If 40% of all U.S. drivers are observed traveling at 65 mph or more, what is the mean μ? - If 25% of all U.S. drivers are observed traveling at 50 mph or less, what is the mean μ?
Two popular over-the-counter antacids are compared to determine which brand is preferred. Three hundred subjects are randomly selected then divided into two groups of 150 each, and given one of the two antacids.
Calculate Cohen's d measure effect size for both tests (σ = 20 and σ = 10). Explain how sample size affect outcome of hypothesis test. How does sample size affect measures of effect size?
Draw a column chart from grade book. Use column illustrating students' names; select one of the tests to plot.
Refer to Questionnaire color Problem 16.8 Explain how you would make the random assignments of supermarket parking lots to color in this single-factor study. Make all appropriate randomizations.
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