Question 10 0/1 pt 399 Details A certain virus infects one in every 400 people. A test used to detect the virus in a per

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Question 10 0 1 Pt 399 Details A Certain Virus Infects One In Every 400 People A Test Used To Detect The Virus In A Per 1 (57.79 KiB) Viewed 39 times

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Question 10 0/1 pt 399 Details A certain virus infects one in every 400 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 10% of the time if the person does not have the virus. (a) Find the probability that a person has the virus given that they have tested positive. (b) Find the probability that a person does not have the virus given that they have tested negative. Submit Question Jump to Answer Question 11 0/1 pt 399 Details 9 percent of a certain company's life insurance policy holders are smokers. For each nonsmoker the probability of dying during the year is 0.002. For each smoker the probability of dying during the year is 0.01. Find the probability that a policy holder who died last year was a smoker. Cubmit Question Jump to Answer
Two hundred consumers were surveyed about a new brand of snack food, Crunchicles. Their age groups and preferences are given in the table. Liked Crunchicles Disliked Crunchicles No Preference Total 18-24 25-34 35-55 55 and over 2 5 16 30 48 4219 25 50 Submit Question Jump to Answer 3 7 35 45 Question 10 One consumer from the survey is selected at random. Use reduced fractions for your responses to each of the following questions. * What is the probability that the selected consumer dislikes Crunchicles? Total 14 79 What is the probability that the consumer is 18-24 years of age, given that he/she dislikes Crunchicles? 31 21 107 57 200 What is the probability that the selected consumer is 35-55 years old or likes Crunchicles? If the selected consumer is 70 years old, what is the probability that he/she likes Crunchicles? 0/1 pt 399 Details A certain virus infects one in every 400 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 10% of the time if the person does not have the virus. (a) Find the probability that a person has the virus given that they have tested positive.
Suppose that 44% of people own dogs. If you pick two people at random, what is the probability that they both own a dog? Give your answer as a decimal rounded to 4 places. Submit Question Question 9 Jump to Answer
Question 5 Giving a test to a group of students, the grades and gender are summarized below A B Male 6 13 19 Female 18 14 8 Total 24 27 27 C Total 38 40 78 If one student is chosen at random, Find the probability that the student was female AND got a "A". Submit Question Jump to Answer Question 6 There are 15 freshmen and 19 sophomore students in a classroom. We randomly select two students. Suppose the students were selected with replacement. a) What is the probability we get 2 freshmen? Suppose the students were selected without replacement. b) What is the probability we get 2 sophomores? Enter an integer or decimal number [more] Be sure to include at least 4 decimal places, if needed. Submit Question Jump to Answer Question 7 0/1 pt 398 6