(a) We consider 10,000 people who are being tested. 2% of the population has strep throat and thus
(b) We note that 296 people test positive, because 296 is mentioned in the row ” Test Positive” and in the column ”Total” of the table. We also note that 198 people test positive and have strep, because 198 is mentioned in the row ” Test Positive” and in the column ”Have strep” of the table. Thus 198 of the 296 people who test positive have strep throat. The probability is the number of favorable outcomes divided by the number of possible outcomes:
Use the two-way table below and answer the questions.
1) P (< 3 cars | 3 to 5 kids) = ?
2) P ( > 3 kids or
Bayes' Theorem is given by
A group of students were polled to find out how many were planning to major in a scientific field of study in college. The results of the poll are shown in the two-way table. Which of the following statements is true? A. Three hundred sixty students were polled in all. B. A student in the senior class is more likely to be planning on a scientific major than a nonscientific major. C. A student planning on a scientific major is more likely to be a junior than a senior. D. More seniors than juniors plan to enter a scientific field of study.