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Question: 1. When trying to detect outliers, discuss the relative merits of using a histogram versus a boxplot.
2. A sample histogram indicates that the data are highly skewed to the right. Is this a reliable indication that if all individuals of interest could be measured, the resulting histogram would also be highly skewed?
The figure below shows the graphs of the probability density functions for the random variable X, the random variable x‾ for n = 5, and the random variable x‾ for n = 15.- Identify each probability density function.
A device has three components and works as long as at least one of the components is functional. The reliabilities of the components are 0.96, 0.91, and 0.80.
A school only accepts students with the top 20% of sat scores. The sat has a mean of 500 and a standard deviation of 100. what actual score should be used as the cut-off score?
Explain how you use data or summaries of data every day-or how data or summari es of data are used on you. Give examples that are different from those provided in the link above,
(a) What alternative hypothesis should the department use if it does not want to use the new tires unless they are definitely proved to give better mileage? In other words, the burden of proof is put on the new tires, and the old tires are to be k..
Use suitable one or two sided test for null hypothesis of no difference in them then changes rating between groups at 0.10 significance level.
The level of satisfaction in a consumer survey would represent what level of measurement?
Assume that the weight of fish for both lakesare normally distributed with equal population standard deviations. Test at =.01 significance level,if the mean weights of fish are different for these two lakes
suppose we assume that the temperatures of healthy humans is approximately normal with a mean of 98.6 degrees and a
Obtain the z-score and T-score for EACH student. Show your calculations. Who did better on the test? How many standard deviation units is each score from the mean?
Find out whether palliative care improves the mental health of people with advanced HIV.
1. when an engineer wants to send a binary signal a 0 or 1 signal through a communication channel assume that there is
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