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Healthcare 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 and have no private health insurance. The ages of 25 uninsured senior citizens were as follows:
60 61 62 63 64 65 66 68 68 69 70 73 73 74 75 76 76 81 81 82 86 87 89 90 92
Compute the arithmetic mean age of the uninsured senior citizens to the nearest hundredth of a year.
1. 68 years
2. 73 years
3. 74 years
4. 76 years
According to Advertising Age, average base salary for women working as copywriters in advertising firms is higher than average base salary for men. The average base salary for women is $67,000 and the average base salary for men is $65,500 (Workin..
Let x be average number of employees in group health insurance plan and y be average administrative cost as percentage of claims. Determine sample correlation coefficient.
Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.)
At a large department store, the amount a shopper spent and the shopper's gender (male or female) were recorded. To determine if gender is useful in explaining the amount of money a shopper spends at the store we could
Last school year, student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classificati..
At the 5% level of significance, can we infer that the difference in the level of satisfaction with service between the two branches is wider than 5 p.c. points?
Draw a tree diagram representing the data. What is the probability that a vehicle stolen in this city will never be recovered?
LINEAR PROGRAMMING MODELS
At α = .05, is there a difference in variances? Illustrate all steps clearly, including the illustration of the decision rule.
Determine critical value if alpha = 0.05? If p-value for this test is 0.025, this p-value means?
At least half the patients are under 15 years old? First, explain how this can be modeled as a binomial distribution with 8 trials, where success is visitor age is under 15 years old and the probability of success is 20%.
If the average tax payer who makes $140,000 per year owes the government $18,200 with a standard deviation of $1500, and the IRS receives a 1040 tax documents from a customer who earned $140,000 that claims he only owes $12,000, should the IRS sus..
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