Sales

From statistics of sales goods, item A buy 51% of people and item B buys 59% of people. What is the probability that from 10 people buy 2 item A and 8 item B?

Result

p =  17.2 %

Solution:

Try another example

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:

Be the first to comment!

Next similar examples:

1. Cards
   From a set of 32 cards we randomly pull out three cards. What is the probability that it will be seven king and ace?
2. Pairs
   From the five girls and four boys teachers have to choose one pair of boy and girl. A) How many such pairs of (M + F)? B) How many pairs where only boys (M + M)? C) How many are all possible pairs?
3. 2nd class combinations
   From how many elements you can create 4560 combinations of the second class?
4. Party
   At party overyone clink with everyone. Together, they clink 171 times. How many people were at the party?
5. Word
   What is the probability that a random word composed of chars T, H, A, M will be MATH?
6. Hockey game
   In the hockey game was made 6 goals. Czech played against Finland. Czechs won 4:2. In what order to fall goals? How many game sequence was possible during the game?
7. A book
   A book contains 524 pages. If it is known that a person will select any one page between the pages numbered 125 and 384, find the probability of choosing the page numbered 252 or 253.
8. Stacks
   Annie has a total of $ 702. The money must be divided into stacks so that each buyer has the same amounth of dollars. How many options she have?
9. Chocolates
   In the market have 4 kinds of chocolates. How many ways can we buy 23 chocolates?
10. Cinema
    How many ways can be divided 11 free tickets to the premiere of "Jáchyme throw it in the machine" between 6 pensioners?
11. Salami
    How many ways can we choose 5 pcs of salami, if we have 6 types of salami for 10 pieces and one type for 4 pieces?
12. Combinations 6
    6 purses 9 flaps 12 straps Every combination must include 1 purse, 1 flap and 1 strap. How many possible combinations?
13. Lines
    In how many points will intersect 14 different lines, where no two are parallel?
14. Candy
    How many ways can divide 16 identical candies to 4 children?
15. Roses 2
    Aunt Rose went to the flower shop to buy a bouquet with three roses. The flower shop had white, yellow and red roses. How many different flowers bouquet can a flower make for Aunt Rose create? Write all the bouquet options.
16. N-gon
    How many diagonals has convex 14-gon?
17. Rectangles
    How many rectangles with area 3002 cm² whose sides is natural numbers are?