A particular telephone number is used to receive both voice calls and fax messages. Suppose that 20% of the incoming calls involve fax messages, and consider a sample of 20 incoming calls.

Q: What is the probability that among 10 randomly observed individuals, exactly 4 do not cover their…

A: Let p be the probability that a randomly selected individual will not cover his or her mouth when…

Q: ontribute to household expenses. 23% of them contribute. a.      What is the probability that at…

A: NOTE:  As per the guidelines, we are supposed to solve the first three sub parts only. Given:…

Q: 2. An email spam filter applies the test to each incoming email.Suppose 80% of all emails are spam,…

A:

Q: 6) The sensitivity of a medical test is defined as the probability that the test will be positive,…

A: Let ,  C = women has breast cancer  C¯ = women does not have breast cancer  P = Test positive  N =…

Q: A recent study suggested that 70% of all eligible voters will vote in the next presidential…

A: Given Information: 70% of all eligible voters will vote in the next presidential election i.e., p =…

Q: 3. A construction crew is building a new bridge. A structural component has a 15% chance of failing…

A:

Q: ) Suppose the percentage of those completing a master's degree is 42%. In a random sample of 9…

A: n=sample size=9, p=42%

Q: 15. About 8% of males are color-blind. A researcher needs a color-blind male for an experiment and…

A: Given that Probability of males whose color -blind (p) = 0.08 (8%) a) Probability that She finds a…

Q: 4. A local florist says that 85% of all flowers sold for Valentine's Day are roses. Consider a…

A: probability of florist says that flowers sold for valentine's day are roses(p)=0.85sample…

Q: a penalty being assessed is 0.31. What is the probability that your tax return is audited but you do…

A: Here  Given  Probability of tax return being audited=P(A)=0.02 ProbabIlity of Penalty being assessed…

Q: Atlantic Airways flights were late (arrived or departed 15 minutes late or more). A random sample of…

A: We have given that  Number of trials n=140 Success of probability p =20.4%=0.204 We use normal…

Q: Suppose that 70% of people walking down a road are wearing a mask. If 10 people are selected…

A: Let X :  people walking down a road are wearing a mask X ~ Binomial ( n=10, p=0.70) And we have to…

Q: 9.State Farm Insurance studies show that in Colorado, 55% of the auto insurance claims submitted for…

A: Binomial probability distribution is a type of discrete probability distribution.

Q: 20.  In a large shipping company, 70% of packages arrive to their destination on time.  If 9…

A: Solution Let X : packages arrive to their destination on time  And X ~ Binomial (n=9, p=0.70) Ans we…

Q: 5) 74% of freshmen entering public high schools in 2006 graduated with their class in 2010. A random…

A:

Q: Suppose the proportion of elementary students in Texas that are enrolled in fully remote learning…

A: Given that p = 0.20, n = 100, p(x<=10) = ?

Q: 3. Suppose your school is in the midst of a flu epidemic. The probability that a randomly-selected…

A: Given information Let event A denotes that the student has flu Event B denotes that the student is…

Q: 13. Companies are interested in the demographics of those who listen and call in to the radio…

A: From the provided information, 20% of listeners phoning in to a morning talk show are male that is p…

Q: In a recent survey, it was found that the median income of families in country A was $58,000. What…

A: Let X denote the income of families in country A. Given that median of X is 58000

Q: 9. Sixty percent of all road accidents are due to distracted driving. In a random sample of 400…

A:

Q: . What is the probability that 187 or more of the sample will approve of President Biden’s andling…

A:

Q: 1. Some article studied the probability of death due to burn injuries. The identified risk factors…

A:

Q: 3. A quality engineer exams a batch of manufactured parts. Each part has a probability of 0.9 to…

A: Let us denote pass as success(S) and fail as (F), thenP(S) = 0.9 =p and P(F) =0.1 =(1-p)Let X be the…

Q: Seven of the 50 digital video recorders (DVRS) in an inventory are known to be defective. What is…

A: The number of defectives is 7 out of 50.

Q: 23. A department store has determined that 25% of all its sales are credit sales. A random sample of…

A: We have given that  Sample size n=75  Population proportion p=0.25

Q: Employers often require their employees to be subjected to random drug testing. Suppose that 5% of…

A: Given that,

Q: Suppose that the average number of typos on a page of a manuscript is 6.93.  What is the probability…

A: Given that,The average number of typos on a page of a manuscript is 6.93