Thursday

April 24, 2014

April 24, 2014

Posted by **Amy** on Wednesday, August 10, 2011 at 9:30am.

a political action group is phoning people urging them to vote. In a district with 416 households, all households have phones. What is the probability that the district manger will find that:

(a) between 40 and 80 have unlisted numbers?

- STATISTICS HELP!!!!!!! -
**drwls**, Wednesday, August 10, 2011 at 10:07ammean (most probable number) =0.15*416 = 62.4

sigma = sqrt(0.15*0.85*416) = 7.28

P (40 to 80) = 99.1%

**Related Questions**

statistics - The probability that a person has an unlisted telephone number is 0...

U.S. Government - 1. Amendment -- gave all men the right to vote regardless of ...

Statistics - if it can be assumed that 39.5% of all telephone #'s are unlisted, ...

statistics - Data shows that 88% of the people in a certain population are right...

statistics - A group of applicants for a position consists of 8 people who are ...

statistics - 2)A political candidate is positive that she will get 60% of the ...

English - I left out a few things. Thank you very much for helping me. 1) ...

Statistics - In a survey of 302 people, the following data were obtained ...

STATISTICS - From a group of 12 people, you randomly select 3 of them. Find the ...

STATISTICS - From a group of 12 people, you randomly select 3 of them. Find the ...