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An HMO is considering a marketing plan targeting patients with chronic diseases to increase the number getting a flu shot. Some preliminary analyses are conducted before implementing such a plan. Available data indicate that 40% of patients with chronic diseases get flu shots.
a)If 10 patients with chronic diseases are sampled, what is the probability that at least 4 get flu shots regularly?
b)What is the probability that at most 8 get flu shots regularly?
The city of Oakdale wishes to see if there is a linear relationship between the temperature and the amount of electricity used (in kilowatts).
A university found that 20 percent of its students withdraw without completing the introductory statistics. Assume that 20 students registered for the course.
What is the probability that none are a commercial success?
A company is producing cylindrical blocks for a children's toy. The average diameter of a block is 3.5 inches. Sixteen blocks are inspected and the diameters are measured.
A study on body types gave the following results: 45% were short; 25% were short and overweight; and 24% were tall and not overweight.
The annual income of a large group of supervisors at Belco Industries follows the normal distribution. The mean amount earned yearly is $48,000 and the standard deviation is $1,200.
Consider the following data for two independent random samples taken from two normal populations. What is the 90% confidence interval estimate of the difference between the two population means?
To test there is significant difference among the mean of income using ANOVA. A developer of real estate is considering investing in a shopping mall on the outskirts of Atlanta, Georgia.
At a .10 level of significance, use Stat Tools (or Excel) to test the sponsors' hypothesis. State the null and the alternative hypotheses and the decision rule. Finally, discuss your findings.
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
Suppose a certain brand of Westinghouse light bulbs has a population life expectancy of 3000 and a population standard deviation equal to 100. (Assume the distribution of the population is normal). What is the probability that a sample of 30 light..
Monte Carlo sampling makes the assumption that all parameters of an alternative are: A. Independent B. Dependent C. Equal to 1.0 D. Probability distribution
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