Posted by **Giselle** on Sunday, January 2, 2011 at 10:23pm.

it has been estimated that about 30% of frozen chickens contain enough salmonella bacteria to cause illness if imprperly cooked. A consumer purchases 12 frozen chickens. What is the probability that the consumer will have more than 6 contaminated chickens?

A) .882

B) .961

C) .039

D) .079

- Statistics and Probability -
**Reiny**, Sunday, January 2, 2011 at 10:48pm
prob of causing illness = .3

prob of not causing illness = .7

so you want

prob(7of 12will cause illness) + prob(8of 12will cause illness)+ ... + prob(12of 12will cause illness)

= C(12,7)(.3)^7(.7)^5 + C(12,8)(.3^8)(.7^4) + ... +C(12,12)(.3^12)

you do the button pushing.

- Statistics and Probability -
**Giselle**, Sunday, January 2, 2011 at 10:50pm
Thank you Soo much!

- Statistics and Probability -
**Reiny**, Sunday, January 2, 2011 at 10:53pm
welcome

## Answer This Question

## Related Questions

- math - A farmer had 500 ducks and 300 chickens. He gave his sister 100 chickens ...
- statistics - The Better Businesss Bureau reports that they resolve 70% of the ...
- Math - A farmer had 250 ducks and 150 chickens. He gave a total of 100 chickens ...
- Math - There are three times as many chickens than pigs on a farm. All the ...
- math - john has horses and chickens he has 3 less chickens than horses, if you ...
- math question (counting) - When Josh was visiting his family’s farm, he saw that...
- math - A farmer had 500 ducks and 300 chickens. He gave his sister 100 chickens ...
- Math Year 10 - Simultaneous equations - Q. A small farm has sheep and chickens. ...
- Economics - Are chickens and and cows examples of capital goods? Capital goods ...
- Mathematics - Old MacDonald has to pack 60 chickens into 32 cages. If each cage ...

More Related Questions