Statistics

posted by .

An airline reports that if has been experiencing a 15% rate of no-shows on advanced reservations. Among 150 advanced reservations, find the probability that there will be fewer than 20 no-shows.

  • Statistics -

    Mean = np = 150 * .15 = ?

    Standard deviation = √npq = √(150 * .15 * .85) = ?

    Note: q = 1 - p

    I'll let you finish the calculations.

    Once you have the mean and standard deviation, use z-scores:
    z = (x - mean)/sd
    Note: x = 20

    After you calculate z, check a z-table to find your probability. (Remember that the problem is asking for "fewer than 20" when you check the table.)

    I hope this will help get you started.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    Delta airline flights seats 340 people. An average of 5% of the people with reservations doesnt show up, so they overbook by 350. This system can be analyzed by using binomial distribution. n=350 and p=0.95 1) Find the probablity that …
  2. statistics

    : an airline offers discounted advanced purchase fares to customers who buy tickets more than 30 days before travel and charges regular fares for tickets purchased in the last 30 days before travel. The airline notices 60% of its customers …
  3. statistics

    An airline experiences a no-show rate 6%. What is the maximum number of reservations that it a capacity 160, if it wants the probability of accommodating all reservation holders to be at least 95?
  4. Statistics

    An airline experiences a no-show rate 6%. What is the maximum number of reservations that it a capacity 160, if it wants the probability of accommodating all reservation holders to be at least 95?
  5. Math

    An airline experiences a no-show rate of 6%. What is the maximum number of reservations that it could accept for a flight with a capacity of 160, if it wants the probability of accommodating all reservation holders to be at least 95%?
  6. Statistic

    An airline experiences a no-show rate of 6%. What is the maximum number of reservations that it could accept for a flight with a capacity of 160, if it wants the probability of accommodating all reservation holders to be at least 95%.
  7. Statistics

    An airline reports that if has been experiencing a 15% rate of no-shows on advanced reservations. Among 150 advanced reservations, find the probability that there will be fewer than 20 no-shows.
  8. Statistics

    Airline overbooking is a common practice. Many people make reservations on several flights due to uncertain plans and then cancel at the last minute or simply fail to show up. Jet Green airlines’ planes hold 100 passengers. Past …
  9. statistics

    a local content center reports that it has been experiencing a 15% rate of no shows on advanced reservations. Among 150 advanced reservations find the probability that there will be fewer than 20 no shows round the standard deviation …
  10. History

    How is reservation life least like life off the reservation?

More Similar Questions