Wednesday
April 1, 2015

Homework Help: math

Posted by smartypants on Wednesday, May 9, 2007 at 8:34am.

please help cuz i been trying for ages and cant get the answer

each telephone call made to the emergency services either is or is not legitimate. suppose that each call received has probability 0.02 that it is not legitimate. assume that the legitimacy of one call is independent of whether or not other calls are legitimate.

(the choices of answers are at the bottom of the page)

QU1) whats the closet option that they receive at least 100calls before they receive one which is not legitimate?

qu2) whats the closet option that in 150calls at least one is not legitimate?


the choices of answers are:
0.003
0.014
0.048
0.133
0.668
0.681
0.867
0.952


Q1) probability of exactly 100 consecutive "good" calls = (0.98)^100 = 0.133
That satisfies the "at least 100" criterion.

Q2)The probability that all of 150 calls are legitimate is (0.98)^150 = 0.048. One minues that, or 0.952, is the probability that at least one is NOT legitimate.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math - i would like any help or suggestions you have please as i am very stcuk ...
math - 100 people set up a phone call system so that the initial contact person ...
math - The cost of a telephone call is $0.75 + $0.25 times the number of ...
Math - Each year (365 days) the fire department receives 270 emergency calls on ...
math - lisa made a long-distance telephone call to her friend Jane. the cost was...
math - Telephone company A charges $3.00 for the first minute of any long ...
Math - The cost of a telephone call is $0.75 + $0.25 ties the number of minutes...
Algebra - How do you represent each answer as an algebraic expression using the ...
algebra - The cost of a telephone call is $0.75 + $0.25 times the number of ...
telemarketing - A telemarketer with B2B Communications has a 20 percent ...

Members