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Several questions and please explain the answer.
1. You are going to register a course which could be easy or hard and decided to ask your friends and classmates who have taken the same class before about their experience. All three say that the class is hard. Given that half of all the courses in this program are tough and your classmates are likely to tell you the truth half of the time. What is the probability that the course in question is indeed hard?
2. Your doctor decided to test you for a disease A. Disease A is rare and occurs in one out of 1000 people in the population. But the test result is positive. Given that the test sensitivity is 100% and specificity is 98%, compute the probability of you having disease A.
3. During a different routine doctor visit, your doctor decides to test you for a disease B. Disease B is also rare and occurs in one in ten thousand people in the population. The time the doctor orders two tests. The tests are made by different pharmaceutical companies and each test has a sensitivity of 99.9% and specificity is 99.8%. One test is positive and the other one is negative. Compute the probability of you having disease B.
Find the probability that the median of these fractions for the 13 sections of the course that are offered next semester is at least 0.40.
a division within a transportation company is responsible for performing maintenance on the fleet of trucks used by the
a) Why is there no coefficient for Medium? b) Explain how the coefficients of? Small, Large, and Very Large account for the size of the city in the model.
Consider the following results for two samples randomly taken from two populations. Construct a 99 percent confidence interval estimate of the difference between the two sample means.
How many different ways are there to select three of the six cups? Please list all of the outcomes in a logical order.
Generate a forecast for the total yearly amount of money that will be spent on advertising in 2008 - shows the quarterly seasonal indexes for building permits
In addition to the sample size n, what population value(s) must be known to find a standardized score for a sample mean x‾?
Explain how the postsampling confidence level is derived from a presampling probability.
The data are based on two telephone surveys, one conducted in November 2000 and one in November 2002. Respondents were asked if they were very likely, somewhat likely, not too likely, or not at all likely to do Christmas shopping online. Would a b..
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
How many ways are there to select a subcommittee of 7 members from among a committee of 21 and how many possible passwords are there if 7 of the letters of the alphabet can be used by the system?
Find the indicated probabilities for a binomial random variable X. 1. P(X) is at most 2 when n = 11, p = .4
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