The probability of a randomly selected adult in one country being infected with a certain virus is 0.006. In tests for the​ virus, blood samples from 25 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.

Q: Of a population of consumers, 60 % are reputed to prefer Brand A toothpaste. If a group of randomly…

A: given data  P(prefer brand A toothpaste) = p = 0.60 P(atleast 5 people need to encounter the first…

Q: At a drug rehab center 41% experience depression and 25% experience weight gain. 14% experience…

A: Given Information: 41% experience depression.  25% experience weight gain 14% experience both. Let D…

Q: The following data indicates the prize distribution for a small lottery of 500 tickets conducted at…

A: Total number of lottery tickets are 500. Given that 1 ticket has $1000 prize and 60 tickets have…

Q: Suppose a math class contains 44 students. There are 23 females (four of whom speak Spanish) and 21…

A:

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: What is the probability that a random sample of 196 letters will contain less than 15% "e s? Type…

A: It is given that n=196 and p=0.12.

Q: 25% of a certain breed of rabbits are born with long hair. What is the probability that in a litter…

A: Obtain the probability that in a litter of 8 rabbits exactly 5 will have long hair. The probability…

Q: A police officer uses a breathalyzer to test the blood alcohol content of drivers suspected of a…

A: We have the null and alternative hypothesis as follows H0 : The driver is not drunk.   Ha : The…

Q: The reported rate for colorblindness for men ages 65 and older is 12%.  Assume this estimate is the…

A: Here, n = 25 and p = 0.12.

Q: If it is known that the results of the report from the production department of a Garment Industry…

A:

Q: ◆. Mammograms are 80% effective in detecting breast cancer. However, their false positive rate is…

A:

Q: In the US, 10.5% of the population is diabetic. What is the probability that in a random sample of…

A: Suppose p is the true proportion of diabetic people in the U.S.

Q: A drug using to treat a particular disease shows 20% failure rate. If we select a sample of 8…

A:

Q: A human gene carries a certain disease from the mother to the child with a probability rate of 32%.…

A: Given that  Number of trials n=4 Success of probability p=0.32 X~binomial (n,p)

Q: The table below describes the smoking habits of a group of asthma sufferers. If one of the 923…

A: Given data:   Non smoker Light smoker Heavy smoker Total Men 304 68 72 444 Women 327 70 82…

Q: The Cincinnati Enquirer reported that, in the United States, 60% of adults and 82% of youths ages 12…

A: Let X be a random variable following normal distribution with mean μ and variance σ2, i.e.,…

Q: According to a poll of adults, about 44% work during their summer vacation. Assume that the true…

A: We have given that  Sample size n= 400 Success of probability = 0.44

Q: QUESTION 9 The probability that a patient recovers from a rare blood disease is 0.3. If 12 people…

A: Given data,p=0.3n=12P(X≥9)=?

Q: Suppose that 80% of drivers are "careful" and 20% are "reckless." Suppose further that a careful…

A:

Q: A company employs the following workers:   Part-time Full-time Casual Total Men 12 76 25 113 Women…

A:

Q: If a group of 10 women is selected: What is the probability that at least two women will develop…

A: Answer n = 10p = 10% = 10/100 = 0.101- p = 1-0.10 = 0.90

Q: A pair of 7 sided dice are tossed. What is the probability that at least one of the dice has a value…

A:

Q: The proportion of individuals that regularly smoke in a population is known to be 0.25. What is the…

A: Given information: p=0.25 Sample size, n=100

Q: Suppose a math class contains 42 students. There are 22 females (two of whom speak Spanish) and 20…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: If it is known that the results of the report from the production department of a Garment Industry…

A: Given that n =10 ,p =0.35

Q: A medical treatment has a success rate of 0.41. Three patients will be treated with this treatment.…

A: binomial distribution formula: P(X=x)=ncxpxqn-x  where P(X=x)=probability of success of x n=number…

Q: Suppose a math class contains 28 students. There are 17 females (two of whom speak Spanish) and 11…

A: For the given data Find 1. What is the probability that a randomly selected student speaks Spanish,…

Q: Based on data from the American Red Cross, there is a 0.45 probability that a randomly selected…

A: There is a 0.45 probability that a randomly selected American will have Type O blood.

Q: Samuel F.B. Morse (1791 – 1872), the creator of Morse Code, claimed that 12% of all letters used in…

A: The population proportion(p) is 0.12. The probability that a random sample of 196 letters will…

Q: Samuel F.B. Morse (1791 – 1872), the creator of Morse Code, claimed that 12% of all letters used in…

A: Note: If the post contains multiple questions only allow to do first question as per guidelines of…

Q: According to a poll of adults, about 43% work during their summer vacation. Assume that the true…

A: From the provided information, The proportion of all adults that work during summer vacation is p =…

Q: Five plants are operated by a garment manufacturer. They feel there is a fifteen percent chance for…

A: Given that n = 5 p = 15% = 0.15 Here we will use binomial distribution because probability of…

Q: Alex makes mistakes in a with an average of 1.2 mistakes per class. In a given class, what is the…

A: Given that  Average =λ=1.2 Here we use poisson probability distribution.  P(X=x) =e-λ*λx/x!       X=…

Q: Suppose a lung cancer test is 85% sensitive and 93% specific. That is, the test will produce 85%…

A:

Q: It has been estimated that only about 25% of residents in Ventura County have adequate earthquake…

A: Since, you have posted a question with multiple subparts we will provide the solution only to the…

Q: ide survey nat 30% aged 18 l8 tattoos. Suppose that this result holds true for the current…

A: Given : Given Data sample size,n= 500 probability of success,p= 0.3 probability…

Q: The annual rainfall (in inches) in a certain region is normally distributed with µ = 24 and o = 4.2.…

A: Given, μ = 24 σ = 4.2 We know, Z = x-μσ

Q: A survey showed that 83% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: The sample size is 18 and probability of adults need correction for their eyesight is 0.83.