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Studies have shown that 1 in 10 adults have heart disease. Probability of a person with heart disease having a positive EKG test= 0.90 Probability of a person without heart disease having a negative EKG test= 0.95
Assume a person arrives to the emergency room with chest pains and they are given an EKG test.
1. If the test is positive, what is the probability that this person actually has heart disease?
2. If the test is negative, what is the probability that this person actually does NOT have heart disease?
3. Suppose the first EKG test is positive. In order to make sure, a second EKG test is given to the person. What is the probability that this person has heart disease if the second EKG test is also positive?
4. Suppose the first EKG test is positive. In order to make sure, a second EKG test is given to the person. What is the probability that this person has heart disease if the second EKG test is negative?
Determine the p-value, and at 95% confidence, test the hypotheses.
The local operations manager for the IRS must decide whether to hire 1, 2, or 3 temporary workers. He estimates that net revenues will vary with how well taxpayers comply with the new tax code.
Mr. Connors philosophy class has 99 students, classified by academic year and gender, as illustrated in the table below. Mr. Connor randomly chooses one student to collect yesterday's work. What is the probability that he selects a male, given tha..
FBI Report do greater universities that tend to have more property crime. Keep a scatter diagram also sketch the line you think best fits the data.
Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
A loan application is received this morning. What is the probability that:
Develop a probability for the number of students in the sample who watch soap operas.
Find the test statistic P-value, and critical value, and state the final conclusion.
The probability of drawing a 6 (to complete an inside straight) after discarding the ace.
An educational study utilizes a simple pre post design to assess the efficacy of a computer tutor for solving inequalities.
If we assume all the possible random samples of 250 students at this university, 95 percent of the samples should have means among what two numbers.
Assume that the average person in America weighs 150 pounds (μ). You want to determine whether colleges students weigh less than the average America, Following are the weights collected on a sample of colleges students: 120, 105, 166, 170, 145, 14..
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