The rates of on-time flights for commercial jets are continuously tracked by the U.S. Department of Transportation. Recently, Southwest Air had the best rate with 80 % of its flights arriving on time. A test is conducted by randomly selecting 15 Southwest flights and observing whether they arrive on time. (a) Find the probability that at least 4 flights arrive on time. (b) Would it be unusual for Southwest to have 3 flights arrive late? (Enter YES or NO)

Q: At TCNJ, 35% of the engineering majors belong to ethnic minorities. If 6 students are selected at…

A: Given,n=6p=0.35X=no.of students belong to ethnic minorityX~Binomial (n=6 , p=0.35)P(X=x)=nx pxqn-x…

Q: Experience has shown that one out of every four customers who place an order with an internet retail…

A:

Q: The probability that an adult possesses a credit card is .35. A researcher selects two adults at…

A: Given information- We have given the probability that an adult possesses a credit card p = 0.35 The…

Q: The probability that an adult possesses a credit card is .35. A researcher selects three adults at…

A: Givenp=0.35n=3x~Binomial(n=3,p=0.35)P(X=x)=Cxnpx(1-p)n-x    ; x=0,1....n

Q: A vehicle manufacturing plant outputs 19 vehicles a day. Of those 19 vehicles, 6 are red, 5 are…

A: Given that  A vehicle manufacturing plant outputs 19 vehicles a day Red vehicles = 6 Blue vehicles =…

Q: xperience has shown that 15% of Tshwane municipal rates bills contain an estimated amount for…

A: Given that p=0.15 and n=75

Q: In a large population, 53 % of the people have been vaccinated. If 4 people are randomly selected,…

A: Given information- Given problem is of binomial distribution. Probability of success, p = 0.53 No.…

Q: The American Automobile Association reports that of the fatal car and truck accidents 54% are caused…

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

Q: ​36% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly…

A: Given information:Number of samples, n = 12Probability of success, p = 0.36Probability of failure, q…

Q: A school newpaper reporter decides to randomly survey 13 students to see if they will attend Tet…

A: Provided information is, a school newspaper reporter decides to randomly survey 13 students to see…

Q: Company ABC distills and bottles 12-oz bottles of water. According to the company policy, any bottle…

A: Given that  Company ABC distills and bottles 12-oz bottles of water. According to the company…

Q: The probability that a school-grade student would drink water, fruit juice, and soda is 0.5, 0.3,…

A: We can select 6 students who will drink water from 15 students in 15C6 ways.  The probability for…

Q: 68% of adults would still consider a car brand despite product/safety recalls. You randomly select…

A:

Q: Experience has shown that one out of every five customers who place an order with an internet…

A:

Q: The proportion of eligible voters in the next election who will vote for the incumbent is assumed to…

A: Given information- Sample size, n = 510 The proportion of eligible voters = 0.54 Now, from Binomial…

Q: University has found out that the graduation rate is 92% (92% of students admitted graduate from the…

A: p = 0.92 n = 300

Q: Suppose the probability of purchasing a defective smart phone is 0.04. What is the probability of…

A: Introduction: Denote X as the number of defective smart phones obtained in a purchase of 20 smart…

Q: The manager of a restaurant in a commercial building has determined that the proportion of customers…

A: Given data n=100 p=14%=0.14

Q: It has been reported that 48% of people text and drive. A random sample of 60 drivers is drawn. Find…

A: The z-score is calculated by using: Where,

Q: what is the probability all three would be smokers?

A: Let , X be the number of smokers Here , X→B(n=3 , p=0.20) The probability mass function of X is ,…

Q: he proportion of eligible voters in the next election who will vote for the incumbent is assumed to…

A: Given that The proportion of eligible voters in the next election who will vote for the incumbent is…

Q: The average number of calls per minute received by a telephone switchboard is 120. What is the…

A:

Q: 200 volunteers at a local kennel were surveyed. It was found that 132 women and 68 men volunteered.…

A: given data  132 women 68 men _______________ 200 total surveyed   of the 132 women 91 liked dogs and…

Q: A computer technician notes that 40% of computers fail because of the hard drive. If he repairs many…

A: random variable X number of trials at which first success occurs. X~geometric(p)  where…

Q: The proportion of eligible voters in the next election who will vote for the incumbent is assumed to…

A: Solution: From the given information, n = 410 and p = 0.527.

Q: Based on the scatter plot below, what is the best guess for the value of the correlation? Y 10 . 8 =…

A: The scatterplot gives an idea of the relationship between the 2 variables.

Q: Blue cab operates 15% of taxis in a certain city and green can operates 85%. After a nighttime…

A: The blue cab operates 15% of taxis in a certain city and green can operates 85%.

Q: The probability of finding a gold card is 0.03. What is the probability that 1 out of 10 randomly…

A:

Q: games. Suppose they play seven games against the New York Islanders in a season. What is the…

A: It is given that the probability of win the games is p = 63.4% = 0.634 of the New York Rangers. The…

Q: university study involves a simple random sample of 26 students taken from a population of​ 12,550.…

A: Given that Simple random sample size (n) = 26 Population size  = 12,550 Undergraduate students make…

Q: 39% adults favor the use of unmanned drones by police agencies. Twelve U.S adults are randomly…

A: Let X denotes the number of U.S. adults who favor the use of unmanned drones by police agencies out…