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Does there seem to be any difference in the effects of the antibiotics on clearance of otitis media? Express your results in terms of relative risk (RR). Consider separated analyses for unilateral and bilateral cases. Also consider and analysis combining the two types of cases.
Did you find any outliers on the dependent variables that were due to errors of coding? If so, what and why? How would you correct an error of coding?
For each of the following populations, would a score of X = 50 be considered a central score (near the middle of the distribution) or an extreme score (far out in the tail of the distribution)?
You may assume the sample data comes from a population that follows a normal distribution.
Over the last year the absentee rate at a large corporation averaged 8.2 days absent with a standard deviation of 6 days. One department with 40 employees had an absentee rate of 12 days per employee.
Data is distribution of the most popular colors for 2005 model luxury cars made in North America. Design the pie chart and bar graph for data.
The following show the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50 and older.
To perform a certain type of blood analysis, lab technicians must perform two procedures. The first procedure requires either 1 or 2 separate steps, and the second procedure requires either 1, 2, or 3 steps. a) List the experimental outcomes assoc..
Employees of a local company are classified according to gender and job type. The following table summarizes the number of people in each job category.
Suppose we have observations x1, x2, . . . , xn. Prove that the sum of deviations of the observations from their arithmetic mean is always equal to zero.
Estimate the probability that the machine will overflow an 8 oz cup.
The distribution of diastolic blood pressures for the population of female diabetics between the ages of 30 and 34 has an unknown mean μd and a standard deviation σd = 9.1 mm Hg.
An insurance company has determined that each week an average of nine claims are filed in their Atlanta branch. What is the probability that during the next week
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