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One percent of all individuals in a certain population are carriers of a particular disease. A diagnostic test for this disease has a 90% detection rate for carriers and a 5% detection rate for non-caniers. Suppose the test is applied independently to two different blood samples from the same randomly selected individual.
(a) Draw a probability tree that describes this experiment. Be sure to carefully de?ne your notation and write the joint probabilities at the end of each branch.
(b) What is the probability that both tests yield the same result?
(c) If both tests are positive, what is the probability that the selected individual is a carrier?
Explain why x is (approximately) a binomial random variable. Use the rules of probability to determine the value of p for this binomial experiment
She also included an untrained control group. The dependent variable was the amount of information retained three months after training. Analyze the data in the table with an ANOVA, HSD tests, and f.
Construct a 90% confidence interval estimate of the mean number of migraine attacks for people treated with acupuncture. Show all work.
1. In this table - identify the independent and dependent variable. 2. What is the purpose of a chi-square test? 3. What is the null hypothesis? 4. What are the degrees of freedom?
Use Excel and determine the number of each type of person that will be needed to complete the job within the allotted time and at minimum cost.
Below are data on park and open space in several U.S. cities with high population density.38 In this table, population is reported in thousands of people
Determine critical value for boundary of the rejection region (i.e., Zα).
recent years have also seen an increase in the use of atm machines. when mr. selig took over the bank the mean number
a company is studying the feasibility of buying an elevator for a building under construction. one proposal is a
Set up a 99% confidence interval estimate of the true population mean amount of glue contained in a 2-litre can. On the basis of your results, do you think that the quality control analyst has a right to complain to the manufacturer?
Construct a? 99% confidence interval for the population proportion. Interpret the results. A? 99% confidence interval for the population proportion is ( ).
The following data give the speeds of 13 cars (in mph) measured by radar, traveling on I-84.
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