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The table below summarizes results from a study of people who refused to answer survey questions. A market researcher is not interested in refusals of subjects below 22 years of age or over 59. Find the probability that the selected person refused to answer of is below 22 or is older than 59.
Assume 1.5% of antennas on new Nokia cell phones are imperfect. For random sample of 200 antennas, determine the probability that: None of the antennas is defective.
What statistical procedure was used to analyze data in study B, how many groups were compared in study B, how many subjects were enrolled in Study C and which study demonstrated the greatest level of statistical significance?
decide whether the random variable x is discrete or continuous. x represents the total number of die rolls required for
in an inertia welding experiment a sample of 50 welds made with a standard welding method were tested. the sample mean
lily estimates that her time to fall asleep each night is approximately exponentially distributed. it takes her an
What type of statistical test best assesses the relationship between job satisfaction and level of stress and what test would be appropriate to determine whether the difference between men and women is real or due to chance variation?
What is the upper limit of the 95% interval? Give your answer to three decimal places. Which of the following assumptions should be checked before constructing the above confidence interval?
Determine the mean and standard deviation of following probability distribution.
sample surveys conducted in a large county in a certain year and again 20 years later showed that originally the
What rule of probability are you using to obtain the joint probabilities and why? In order to answer the 'why' part of the question you must tell me why the rule of probability you chose to use applies in this case.
How do we decide if the homogeneity of variance assumption is significantly violated?
Compute the Expected Value (Mean), The Variance, and The Standard Deviation for this random variable. X 1 2 3 4 5 6 7
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