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The following are body mass index (BMI) scores measured in 12 patients who are free of diabetes and participating in the study of risk factors for obesity. Body mass index is measured as ratio of weight in kilograms to height in meters squared.
25 27 31 33 26 28 38 41 24 32 35 40
a) Calculate the mean BMI
b) Calculate the standard deviation of BMI
c) Calculate the median BMI
c) Calculate Q1 and Q3
e) Are there outliers in distribution of BMI (justify your answer)?
Two people are playing a game. Only one dice is thrown. If the outcome is a 2 or a 3, then player 1 pays player 2 $6. How much should player 2 pay player 1 when a 1, 4, 5 or 6 is thrown so that player 1 and 2 break even
a) Specify the null and alternate hypotheses for testing that the population correlation is negative. b) Calculate the estimate of the population correlation coefficient between X and Y.
Consider the following two columns that describe different types of data: A. Nominal 1. Qualitative B. Discrete 2. Quantitative C. Ordinal D. Continuous. The correctly paired groupings of the two columns is:
Assuming the standard deviation stays the same, how much do you have to reduce your average production time so that 95% of the time you can deliver the product in under 75 hours?
The main goal of correlation research is ______________
Suppose there are two samples of size 6 and 7, with a rank sum of 58 in the sample of size 6. Using the Wilcoxon rank-sum test, evaluate the significance of the results, assuming there are no ties.
Is there evidence of a difference in the median performance between the two methods? (Use x = 0. 05).
Write a statistical laboratory report using the guidelines in the assigned article, "How to Write a Statistical Report."
One state lottery has 1000 prizes of $1, 200 prizes of $5, 50 prizes of $25, 15 prizes of $150, 4 prizes of $500, and 1 prize of $2500. What is the lottery expected profit per ticket?
Make up a scatter diagram with 10 dots for each of the following:
You only worry if there is at least a 50 or more percent chance that you have the disease. Suppose that test has same specificity = p For what value of p will you start to worry?
Sketch a scatter plot that could represent data from each of following. Label the axes to indicate the independent and dependent variable.
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