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Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over 60 years of age whose net worth is too high to qualify for Medicaid but who have no private health insurance. The ages of 25 uninsured senior citizens were as follows:
68
73
66
76
86
74
61
89
65
90
69
98
62
81
63
70
60
87
75
64
82
Using Minitab, create a box-plot and histogram for the data above and copy the results into your Problem Set.
a. Based on these graphs do you believe the data appears to be normally distributed? Why or why not? (You must include the graphs and explain what you are looking for as you make this decision in order to receive full credit on this one.)
b. Explain the effect outliers can have on the analysis of the center of this data set. Based on the box-plot and histogram you created for problem 1, do there appear to be any outliers?
Using alpha = 0.05 and a computed value of +4.49, can we conclude that the percentage of claims for married policyholders is less then for single policyholders?
A noted psychic was tested for ESP. The psychic was presented with 400 cards face down and asked to determine if each card was marked with one of four symbols: a star, cross, circle, or square. The psychic was correct in 120 cases. Let p represent..
Do students tend to improve their SAT Mathematics (SAT-M) score the second time they take the test? A random sample of four students who took the test twice received the following scores
A case-control study of relationship between liver cirrhosis among both non alcoholics and alcoholics. Describe whether smoking is confounder.
Which of the following(s) can be considered (a) variable(s)?
In what height interval must the company expect to determine middle 70% of kindergarteners?
Now he wants to know if there is a difference between the three formats. Is there?
In an analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is:
Estimating the value of the population mean on the basis of the sample mean alone produces a(n):
The probability of the patient being chosen at random as having meningitis as only site of infection is?
See if there is a difference in their means and variances.
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
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