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1. Consider a screening test for ovarian cancer that has a sensitivity of 95%. Calculate what the specificity of the test should be for it to have a PPV of 80% given that the prevalence of the ovarian cancer in the given population is 0.05%?
2. Consider a screening test for a disease that has a sensitivity of 90%. Calculate what the specificity of the test should be for it to have a minimum PPV of 86% given that the prevalence of the given disease in the given population is 5%?
In summer 2000, a growing number of warranty claims on Firestone tires sold on Ford SUVs prompted Firestone and Ford to issue a major recall. An analysis of warranty-claims data helped identify which models to recall.
Suppose we flip two pennies, three nickels, and four dimes. What is the probability that the total value of all coins showing heads is equal to $0.31?
In a city, 28% of new cars were stolen within one year of purchase. Suppose two new cars were randomly selected.
Determine how large a sample would be necessary to estimate the population proportion with a margin of error of .05 at 95% confidence.
Compute the linear regression model based on the sample data. Interpret the slope and intercept coefficients.
the average drive to work for a sample of 6 teachers at a large high school is 17 miles. the standard deviation of this
A machine will allow the farm to inspect 500 eggs per hour. What are the initial center line and control limits for a chart of the hourly percent of damaged eggs?
Consider the relief supply chain infrastructure for a main island in the event of flood disaster illustrated by Figure. Suppose that the probabilities that links 1 and 2 are destroyed in the event of a flood are 0.03 and 0.07, respectively. Find t..
The International Council of Shopping Centers reports that the average teenager spends $39 during a shopping trip to the mall.- Identify and interpret the p-value for the test. Using the 0.025 level of significance, what conclusion do you reach?
from a set of n people a committee of size j jltn is to be chosen and then a subcommittee of size i i lt j is to be
suppose that in elections a candidate says that hell get 60 of the votes in the election. the total population is 300
nick is able to achieve his lifetime goal of buying a sports card company. his first set of sports cards are released
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