Algebra

posted by .

During a clothing sale, 1/4 of the store merchandise is reduced in price. Find the probablility that 3 of 5 randomly-selectled shirts have reduced prices.

  • Algebra -

    Probability all 5 are reduced is
    P(5) = (1/4)^5 = 0.000996
    Probability that none are reduced is
    P(0) = (3/4)^5 = 0.3773
    Probability that 3 out of 5 are reduced is
    P(3) = (1/4)^3*(3/4)^2* [5!/(2!*3!]= 0.0879
    P(1) = (1/4)(3/4)^4*5 = 0.3955
    P(2) = (1/4)^2*(3/4)^3*[5!/(2!*3!)] = 0.2637

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    During a clothing sale, 1/4 of the store merchandise is reduced in price. Find the probablility that 3 of 5 randomly-selectled shirts have reduced prices. my guess is to multiply 1/4 and 3/5 but that has to be wrong
  2. Algebra II

    During a sale, 1/6 of the CD prices are reduced. Find the probability that 2 of 4 randomly-selected CDs have reduced prices. How do I set this one up?
  3. 8th grade math

    Julianne plans to take advantage of the after Thanksgiving sale to purchase the portable DVD player she wants. She finds it on sale at two different stores at the local mall. J-Mart advertises the DVD player for $48.00, while Better …
  4. Math

    Signs in a department store read, "75% off original prices when you take an extra extra 50% off already reduced prices." By what percent were original prices reduced before today's sale?
  5. help(math)

    Signs in a department store read, "75% off original prices when you take an extra extra 50% off already reduced prices." By what percent were original prices reduced before today's sale?
  6. math

    Traditions Clothing Store is having a sale. Shirts that were regularly priced at $20 are on sale for $17. What is the percentage of decrease in the price of the shirts?
  7. 7th grade math Ms. Sue last two questions thanks

    15. In Store A, a book that regularly sells for $24.99 is on sale at 15% off. In Store B, the same book regularly sells for $27.99 and is on sale at 25% off. Which store sells the book for the lower sale price?
  8. algebra

    the dress store is having a sale where all merchandise is 1/4 off. a woman buys $42 of merchandise at the sales price. what would she have had to pay at the regular price.
  9. English

    1. All shirts are 10 % off. 2. All shirts are on sale, 10 % off. -------------- Are both the same?
  10. Math

    Store a has a promotion if you Bryce three shirts you get 25% off the total price of the three shirts store be has the same shirts on sale with a promotion that if you buy three shirts you get the third shirt on a 50% discount store …

More Similar Questions