According to American Airlines, Flight 215 from Orlando to Los Angelas is on time 90% of the time. Randomly select 150 flights and use the normal approximation to the binomial to approximate the probability that exactly 130 flights are on time.

Q: In a large population, 51 % of the people have been vaccinated. If 5 people are randomly selected,…

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Q: A recent study for Las Vegas showed that the probability of an individual resident moving in a given…

A: Solution: Let X be the number of times an individual will move and n be the number of years. From…

Q: In a recent study nationwide, it was found that 41% of people own dogs. If you pick two people at…

A: Given that  It was found that 41% of people own dogs. P(Dog) = 41% = 0.41   We know that…

Q: In a large population, 64% of the people have been vaccinated. If 4 people are randomly selected,…

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Q: what is the probability that his team will win th

A: Since , we have that the probability of making a field goal over a 40 yards is 77%. Also , the field…

Q: (a) One prominent physician claims that 70% of those with lung cancer are chain smokers. If his…

A: Given information: P(Chain smokers) = 0.70 n = 12 Determine the required probability using the…

Q: The ABCD ELECTRONICS has just manufactured 5000 blu-rays, and 50 are defective  if 5 of these…

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Q: Assume that there is a 10% rate of disk failure in a year  A) if all your computer data is stored…

A: P[a disk failure]=0.1,  (A) P[at least one working drive out of two]=1-P[none are working out of…

Q: A credit card company randomly generates temporary 5 digit pass codes for cardholders. Mehgan is…

A: Given information: A credit card company randomly generates temporary 5 digit pass codes for…

Q: Suppose that 18% of people that enter a car dealership buy a car that day from that dealer. What is…

A: According to central limit theorem, the sampling distribution of sample proportion follows the…

Q: A die is weighted in such a way that each of 5 and 6 is eight times as likely to come up as each of…

A: Given: Probability of getting a 5 or a 6, when a die is rolled, is 8 times the probability of…

Q: Suppose the influenza vaccine this year is 88% effective to prevent the flu among high-risk…

A: Probability, p = 88% = 0.88Sample size = 25

Q: The National Vaccine Information Center estimates that 90% of Americans have had chickenpox by the…

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Q: A die is weighted in such a way that each of 1 and 2 is eight times as likely to come up as each of…

A: Let us assume P(3)=x The probability of getting 3,4,5,6 are same So, P(4)=P(5)=P(6)=x   given that…

Q: In a large population, 57 % of the people have been vaccinated. If 3 people are randomly selected,…

A: It is given that 57% of the people have been vaccinated. A sample of 3 is considered. At least one…

Q: In a large population, 64 % of the people have been vaccinated. If 5 people are randomly selected,…

A: Probability = 64% = 0.64 Sample size, n = 5

Q: A recent study by Allstate Insurance Co. finds that 78% of teenagers have used cell phones while…

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Q: A phone company reports that 52 % of its customers subscribe to their high-speed internet service.…

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Q: In a large population, 52 % of the people have been vaccinated. If 5 people are randomly selected,…

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Q: The units without evidence of gas leaks or electrical failure showed other types of failure. If this…

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Q: The CDC estimates that a non-infected person has a 10% chance of contracting mumps from an infected…

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Q: A certain airport receives on an average of 4 aircrafts per hour. What is the probability that no…

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Q: Suppose that the average number of accidents occurring weekly on a par- ticular stretch of a highway…

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Q: Suppose that a policeman with a radar gun is watching traffic pass on a street where it is the case…

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Q: Sixty two percent of 12th graders attend school in a particular urban school district. If a sample…

A: We are given:n = 500, p = 0.62, (1-p) = (1-0.62) = 0.38The binomial distribution approximates to…

Q: It is estimated that 3.5% of current high school seniors will live past their 90th birthday. If a…

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Q: In a recent survey conducted by the International Nanny Association, 4,176 nannies were placed in a…

A: Yes, it is appropriate to divide 24 by 4,176.

Q: A meteorologist found from the past year’s records that it rained 17% of the days. Based on this…

A: Let X= number of days rained  Number of observation= 15  probability of X= p = 0.17  So, X follows a…

Q: Five of the eight students are from Middle Georgia State College. What is the probability that all…

A: According to the provided information, eight college students have applied for the interview. Four…

Q: A. Suppose an admissions office determines that 40% of students who are accepted actually enroll in…

A: Given: The probability that students actually enrolled, p=0.40 Number of students, n=800

Q: A six-sided die is rolled twelve times. What is the probability that the die will show an even…

A: Let p be the probability of getting an even number. Then p = 3/6 = 0.5 Let X denote the number of…

Q: A recent survey found that 86% of first-year college students were involved in volunteer work at…

A: The provided information are:Proportion of first-year college students were involved in volunteer…

Q: A study determined that 2% of children under 18 years old lived with their father only. Find the…

A: Given,n=16p=0.02Let X=no.of children under 18 years old livedwith their father onlyX~Binomial(n=16 ,…

Q: The Agency for Healthcare Research and Quality reported that 53% of people who had coronary bypass…

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Q: In a large population, 67 % of the people have been vaccinated. If 4 people are randomly selected,…

A: Let us denote X=the number of people who have been vaccinated n=sample size= 4 p=probability of…

Q: If a seed is planted, it has a 80% chance of growing into a healthy plant. If 11 seeds are planted,…

A: Solution Given: Sample size (n) = 11 p (don't grow into a healthy plant) = 1- p (grow into a healthy…

Q: The probability that 66 or fewer people in the sample are satisfied is which is not unusual because…

A: Sample proportion = 66/100 = 0.66Population proportion = 0.72n = 100

Q: In a certain study, the chance of encountering a car crash on the road is stated as 20%. Express…

A: We know that for an event E the probability of the event E is given by; P(E)=Number of favourable…

Q: A test for the presence of salmonella in chicken detects 97% of the time when the bacteria is…

A: Given data: presence of salmonella in chicken detects  = 97% Also gives a false positive  = 2% of…

Q: A recent survey showed that 71 full-time employees out of a sample of 500 did not use all of their…

A: Total number of employees = 500 Number of employees who did not use all of their vacation days last…

Q: According to police sources, a car with a certain protection will be recovered 90% of the time. If…

A: Introduction:Consider the event of recovering a stolen car with the protection as a “success”.For a…

Q: Based on the American Chemical Society, there is a 0.8 probability that in the U.S., a randomly…

A: Given, Probably that a randomly selected dollar bill tainted with traces of cocaine (p) = 0.8…

Q: A sample of 400 adults found that 82  have high blood pressure. However, 98 of those studied…

A: The total sample of adults is 400.

Q: The probability that an electronic circuit board contains dirty particles is 0.01. Considering that…

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Q: Suppose it has been determined that the probability is 0.8 that a rat injected with cancerous cells…

A: Suppose it has been determined that the probability that a rat injected with cancerous cells will…

Q: Find the probability that a driver with at least one collision in the past year is a middle aged…

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Q: Another engineer is testing a different set of chips from a different wafer and hasn't seen a…

A: No. of chip tests = 200.  There has no been a defective in the past 50 chips.  But here, this wont…

Q: In a large population, 56% of the people have been vaccinated. If 5 people are randomly selected,…

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Q: The cumulative probability for the entire binomial distribution does not have to sum to 1.  True…

A: By the property of cumulative probability, any of distribution, the cumulative probability of entire…

Q: A company that makes remote control aeroplanes believes that 6% of purchased planes are returned…

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