Monday

September 22, 2014

September 22, 2014

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

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**

**Related Questions**

math - i would like any help or suggestions you have please as i am very stcuk ...

math help-emergency - I've been trying this alooot of times and couldn't get ...

math - The cost of a telephone call is $0.75 + $0.25 times the number of ...

Math - The sum of the ages of Monica and her mother is 70. Monica is 4 less than...

math - Telephone company A charges $3.00 for the first minute of any long ...

Algebra - How do you represent each answer as an algebraic expression using the ...

math - lisa made a long-distance telephone call to her friend Jane. the cost was...

Math - The cost of a telephone call is $0.75 + $0.25 ties the number of minutes...

math (unanswered, previously posted) - A set of telephone lines is to be ...

math - 100 people set up a phone call system so that the initial contact person ...