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1) What signified to you on all of the problems that required a normal distribution that you were to use a normal distribution? Which problems required a normal distribution?
2) What signified to you on all of the problems that required a binomial distribution that you were to use a binomial distribution? Which problems required a binomial distribution?
Subjects at both sites were classified as dropouts if they left the study before the conclusion, or completers if they finished the study
Find the range, standard deviation, and variance for the scores.
Research question : At α = . 05, is cockpit noise level independent of flight phase?
She believes that the number of customers served on weekdays follows a normal distribution. Construct an 99% confidence interval of the average number of customers served on weekdays.
Using the first two digits of the measurement as your stem, construct a stem and leaf display of the data above.
A researcher was interested in determining whether incentives affect the response rate in surveys. A simple random sample of 50 adult residents of a large city was selected. All were mailed a survey and promised a check upon returning a completed ..
Construct a 95% confidence interval for the proportion of people disagreeing with the statement.
Compare the percentage found in b) to percentage given by Empirical Rule and Chebyshev's Rule. (Make a table 3 x 3).
Detremine the mean, standard deviation, and variance for this frequency distribution.
Find the asymptotic distribution of the MLE of the indicated parameter and find formulas for approximate standard errors of the MLE.
R.C. Geary wrote some 70 years ago that "Normality is a myth. There never was, is, nor will there ever be a Normal distribution".
The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Build a 95 percent confidence interval for mu, population mean.
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