In a store, 65 percent of purchases are made by credit card, on a randomly selected day 17 purchases were made. a) What is the probability that exactly 7 purchases were paid for by credit card? b) What is the probability of finding that more than 13 purchases were paid for by credit card? c) What is the probability of finding that at most 6 purchases were paid for by credit card? d) Find the expected value of the probability distribution E(x) and the standard deviation

Q: typical day at a local popular mall, the number of shoplifters caught by mall security fluctuates…

A: According to guidelines we solve first three subparts when given multiple subparts

Q: According to Nielsen Media Research, 30% of televisions are tuned to NFL Monday Night Football when…

A: Given: p=0.30n=50

Q: An animal shelter has a 77% adoption rate for puppies. Of all the puppies in the shelter, 71% live…

A: (a)   Obtain the probability that a random selected puppy in the shelter will get adopted and live 7…

Q: Does crime pay? The FBI Standard Survey of Crimes showed that for about 80% of all property crimes…

A: Givensample size(n)=4The probability that case is never solved=80%The probability for the case is…

Q: An air traveler from Istanbul to Ankara have two options on Turkish Airlines: a 190 TL fare with a…

A: Given that

Q: b) A bottled water company has found in the past that 2% of their bottled water does not meet the…

A:

Q: A company employs 1000 workers, where on a given day one worker take a paid sick-leave with…

A: The sample size is 1000 workers. The probability that a given day one worker take a paid sick-leave…

Q: Blocks of concrete are tested for conformance to strength specifications. The outcomes of the test…

A:

Q: In a factory, there were 12 accidents involving machinery in the last six months. (a) State the…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: According to astudy, 80% of children nide their purihases fromm their parents in a random Sample of…

A: Given: n=22p=0.80q=1-p=1-0.80=0.20 The probability that at least 21 children hide their purchase is…

Q: A pitcher pitches a strike ( a good pitch) an average of 75% of the time. What is the probability…

A:

Q: On average, a professor receives 24.7 e-mails from students the day before a final exam. What sort…

A: Given that  The Average a professor receives e-mails from the students the day before a final…

Q: Let X be a random variable representing the number of Vitamin C packs, that a pharmacist sells per…

A: Given, The pharmacist sells on the average 5 Vitamin C packs per hour Let X be a random variable…

Q: The mean height of women in a country​ (ages 20−​29) is 63.8 inches. A random sample of 75 women…

A:

Q: A major hurricane is a hurricane with wind speeds of 111 miles per hour or greater. During the 20th…

A: Solution: Let X be the number of major hurricanes will strike the U.S. mainland. From the given…

Q: 40% of consumers believe that cash will be obsolete in the next 20 years. Assume that 7 consumers…

A:

Q: The departure time, in hours, of a bus upon arrival at a terminal has a U(0,1) distribution. What is…

A: Solution

Q: a) List each possible outcomefor the colors of the shirts if two shirts are drawn randomly from the…

A: In question, Given that a dresser drawer has blue shirts, yellow shirts, red shirts, and green…

Q: A die is rolled 10 times. Find the probability of rolling the following:   (a) What is the…

A: Let x follows binomial distribution and the probability distribution function is PX=x=Cxnpx1-pn-x…

Q: A baseball player has a batting average of 0.28. Assume that he comes to bat 5 times in a game. a)…

A: p=0.28 sample size(n)=5 Let "x" be the no. of hits in a game  x~Binomial(n=5,p=0.28)…

Q: Suppose a tire manufacturer rejects 3% of their tires produced because they have some sort of…

A: Given:  A tire manufacturer rejects 3% of their tires produced because they have some sort of…

Q: Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and…

A:

Q: A study showed that 67.9% of occupants involved in a tatal car crash wore seat belts. Of those in a…

A: Given: A study showed that 67.9% of occupants involved in a fatal car crash wore seat belts. Of…

Q: average. What is the probability that four or fewer patrons will enter the restaurant in a 9-minute…

A:

Q: 40% of consumers believe that cash will be obsolete the next 20 years. Assume that 8 consumers are…

A: Given thatp = 0.40n = 8X ~Binomial(n, p) X ~ Binomial (8, 0.40)The PMF of the Binomial distribution…

Q: A security system sets a false alarm with probability 0.1, independently between applications of the…

A: Let us denote X=the number of false alarmsn=Total number of alarms p=probability of success=…

Q: What is the probability that 8 out of 12 customers will see dramatic results? What is the…

A:

Q: A newspaper finds that the mean number of typographical errors per page is seven. Find the…

A: Solution

Q: What is the most appropriate probability distribution to use? What is the probability that 60 mRNA…

A: Transcriptional bursting is a fundamental property of genes in which transcription from DNA to mRNA…

Q: east one collision during any one-year period. The results of the study are: Probability of at least…

A:

Q: According to a survey, 26.8% of credit-card-holding families in a certain area hardly ever pay off…

A: p(families hardly ever pay off the balance)=p=0.268q=1-0.268=0.732x= no. of families hardly ever pay…

Q: A national polling company polled Canadians about their coffee consumption and made the following…

A: Since each of the polled Canadians have only options of "consuming at least a cup of coffee a day"…

Q: In a clinical trial of a drug tested to verify its use in helping people to stop smoking, 793 people…

A: a) We can use Binomial distribution for the number of people who reported feeling sick in this…

Q: A produced item is with 5% defective. Find out the probability that out of 10 items randomly…

A: given data P(defective) = p = 0.05sample size (n) = 10x = no. ofdefective items in…

Q: A video game company has created a new first person shooter game where players have a hit rate that…

A: HERE GIVEN  GAME OF SHOOTER  HIT RATE IS UNIFORMLY DISTRIBUTED BETWEEN 30 AND 70. SO HERE b=70…

Q: The mean height of women in a country​ (ages 20−​29) is 64.2 inches. A random sample of 75 women in…

A: Given information- Population mean, µ = 64.2 inches Population standard deviation, σ = 2.92 Sample…