The probability of a randomly selected adult in one country being infected with a certain virus is 0.003. In tests for the virus, blood samples from 18 people are combined. What is the probability that the combined sample tests positive for the virus? Is it unlikely for such a combined sample to test positive? Note that the combined sample tests positive if at least one person has the virus. The probability that the combined sample will test positive is (Round to three decimal places as needed.)

Q: The probability that a person living in a certain city owns a dog is estimated to be 0.2. Find the…

A: Given,               P=0.2               X=10               r=2      X~ Neg.Binomial…

Q: The probability of randomly sampling someone in my neighborhood and finding that they own a pet is…

A: Given Information:  Probability of finding that they own a pet = 0.7  Sample size (n) = 6  To find…

Q: The probability of a randomly selected adult in one country being infected with a certain virus is…

A:

Q: A survey showed that 75% of adults need correction for their eyesight. If 8 adults are randomly…

A: Given that 75% of adults need correction for their eyesight. There are 8 adults in the study. Let us…

Q: Suppose the probability of having a boy or a girl is equally likely.  In 6 births, what is the…

A:

Q: Find the probability that the average effective time of the pain relief drug for a sample of 25…

A: The mean is 2 hours and the standard deviation is 0.20 hours.

Q: A bag contains 40 marbles . The probability of selecting a red marble at random is 2/5 How many red…

A: Total marble = 40 Probability = 2/5

Q: About 5% of employed adults in the United States held multiple jobs. A random sample of 60 employed…

A: We have given that  Sample size n =61 Population proportion p=5%=0.05

Q: A certain prescription drug is known to produce undesirable side effects in 35​% of all patients who…

A: Solution: Let X be the number of patients have undesirable side effects who use drug and n be sample…

Q: The probability that someone will pick up the habit of smoking is 0.2. The probability that someone…

A: Given,P(he/she has smoked)=0.2P(some0ne smoke and develops lung cancer)=0.07

Q: The table summarizes results from pedestrian deaths that were caused by automobile accidents.…

A: For the given data P( both involved pedestrians that were not intoxicated) = ?

Q: Two cards are selected from a standard deck of 52 playing cards. The first card is not replaced…

A: Total Cards in deck = 52 Number of club in the deck = 13 Number of spade in the deck= 13 Probability…

Q: Use the following to answer Questions 6 and 7. A recent nationwide study of myopia (nearsightedness)…

A: (6)   Obtain the probability that both individuals suffer from myopia.   The probability that both…

Q: A human gene carries a certain disease from the mother to the child with a probability rate of 54%.…

A: It is given that n = 5 and p = 0.54.

Q: On a single draw from a deck of playing cards, the probability of selecting a heart is ¼, the…

A: On a single draw from a deck of playing cards, the probability of selecting a heart is ¼, the…

Q: Given that the probability of a company having a section in the newspaper is 0.43, and the…

A:

Q: cording to a recent survey, the probability that the driver in a fatal vehicle accident is female…

A: GIVEN DATA event A  : river 24 years old or lessevent F : driver in a fatal accident is femaleP(F) =…

Q: A certain disease has an incidence rate of 0.6%. If the false negative rate is 4% and the false…

A: we have to find given probability.

Q: group of tourists are visiting the Colosseum in Rome, Italy. Out of the group of 56 people, 15 are…

A:

Q: Children have a  1 in 2500 chance of being born with Cystic fibrosis and children have a 1 in 10000…

A: P(cystic fibrosis) = 1/2500 P(phocomelia) = 1/10000 Formula : P(either A or B) = P(A∪B) = P(A)+P(B)…

Q: Suppose that asthma affects 1 in 20 children in a population. We decide to redo the survey and now…

A:

Q: The average number of field mice per acre in a wheat field is estimated to be 1.2. Find the…

A: Given, The average number of field mice per acre in a wheat field is estimated to be 1.2. The…

Q: A recent survey in Montana revealed that 20% of the vehicles traveling on highways, where speed…

A: From the provided information,Probability of the vehicles travelling on highways, where speed limits…

Q: The probability of randomly selecting a red marble from a jar that contains 10 red marbles and 30…

A: Solution: From the given information, a jar contains 10 red marbles and 30 blue marbles. Total…

Q: Suppose a math class contains 33 students. There are 23 females (five of whom speak Spanish) and 10…

A: Given Information : Total number of students  = 33 The number of female students  = 23 and five of…

Q: 75% of American adults received a speeding ticket. If a random sample of 20 adults is selected, find…

A:

Q: A​ true/false test has 110 questions. A passing grade is 57​% or more correct answers. Find the…

A: Binomial distribution: It is the probability distribution of a discrete random variable. The…

Q: Suppose that the probability that a child living in an urban area in the United States is obese is…

A:

Q: If a seed is planted, it has a 80% chance of growing into a healthy plant.If 6 seeds are planted,…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: A certain virus affects 0.7% of the population. A test used to detect the virus in a person is…

A: Probability is the numerical chance of occurrence of an event. we express this in terms of…

Q: A survey showed that 79% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: Obtain the probability that no more than 1 of the 14 adults require eyesight correction.   The…

Q: On the average the traffic pattern at an intersection is as follows: • Twice as many cars go through…

A: Let us assume  The number of cars= c The number of vans= v The number of bicycles= b The number of…