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The body mass index (kg/m2) is calculated by dividing a person weight by the square of his/her height as is used as a measure of the extent to which the individual is overweight. Suppose the distribution of the body mass index for men has a standard deviation of 3kg/m2 and we wish to estimate the mean using a sample size of n = 49. Find the probability that we could be correct within 1kg/m2.
The 'interaction effect' was also important. By using the means in the table above write a statement explaining how the anti-anxiety drug appears to affect anxiety. Are the outcomes consistent with the hypothesis proposed by the researchers?
In an analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is:
Determine the percent of the days is the price between $38.00 and $40.00?
What is the probability that the project will be completed in 17 months or less?
Comparison of paired and unpaired samples test - Identify which of the two tests (Independent samples and Paired samples) test is the preferred test and justify your choice.
A random sample of 52 groups gave a mean of $8.30 with a standard deviation of $2.42. Find a 90% confidence interval for the mean amount left by all groups.
Students are the University of New Harmony received 10, 000 course grades last semester. The table below breaks down these grades by which school of the university taught the course.
For the 20 test scores shown, find the percentile rank for a score of 86.
What is the probability that all tree students pick a different card?
A state-wide sample survey is to be made. First, the state is subdivided into counties. Seven counties are selected at random and further sampling is concentrated on these seven counties.
Write up your results by using scientifically recognized form.
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
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