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A random sample of n= 16 participants were selected from a normally distributed population of N = 200 conference attendees. The sample mean age was 36 years and population standard deviation of 8 years. (use finite population correction factor)
What is approximately the largest sample mean of another sample of n= 16 participants you would expect to obtain from this finite population?
Is global F ratio significant? Identify this F ratio, and describe whether it is important.Is coefficient for X1 (productivity) significant? How do you know? Mention its t value and accompanying P-value.
Calculate the mean, median, range, and standard deviation for the Body Fat Versus Weight data set. Report your findings, and interpret the meanings of each measurement.
The data below shows the time to process an inpatient admission, before and after a system usage training session was given. The following hypotheses were formulated for this study.
What proportion of the variability in steel shipments for motor vehicles is described by regression equation?
Now compute the standard deviation for this distribution.
Evaluate the result in part c with the decision using the expected value approach.
Determine the range and standard deviation of the times.
Find out the expected shape of distribution of sample mean?
Random samples of 25 observations were selected from each of 3 populations. For these data, SSTR= 120 and SSE = 216.
Determine margin of error for confidence interval in (a)?
Compare value of test statistics F obtained in part(2) with value of t 2 , square of test statistic for testing H 0 : β 1 =0 that was needed in test null hypothesis that true slope is 0. Interpret the results of this test.
Suppose the weights of full boxes of a certain kind of cereal are normally distributed with a population standard deviation of 0.29 ounces.
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