Illustrate what is the probability all four calls are, Ask an Expert

Statistics

Find the required probability and sample size for the binomial distribution.

Public Safety: 911 Calls the Denver Post reported that a recent audit of the Los Angeles 911 calls showed that 85% were not emergencies. Suppose that the 911 operators in Los Angeles have just received four calls.

a) What is the probability all four calls are in fact emergencies?

b) What is the probability that three or more calls are not emergencies?

c) How many calls n would the 911 operators need to answer to be 96% (or more) sure that at least one call was in fact an emergency?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9167882

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

The average price of a television on a certain web site is

The average price of a television on a certain Web site is ?$760. Assume the price of these televisions follows the normal distribution with a standard deviation of ?$190. Complete parts a through d below. What is the pr ...

41 of the doctors in america are dentists if a random

41% of the doctors in America are dentists. If a random sample of size 826 is selected, what is the probability that the proportion of doctors who are dentists will be less than 40%?

On a certain banking machine customer arrives at an average

On a certain banking machine customer arrives at an average 15 per hour. a. What is the probability that 12 customers will use the machine in the next hour? b. What is the probability that there will be fewer than 3 cust ...

An oil company determines it costs 25000 to sink a test

An oil company determines it costs $25,000 to sink a test well, an oil hit yields a net revenue of $475,000($500,000 gross-$25,000costs), and a natural gas hit yields $125,000 net revenue ($150,000 gross-$25,000 costs). ...

A survey is conducted from a population of people of whom

A survey is conducted from a population of people of whom 65?% have a college degree. The following sample data were recorded for a question asked of each person? sampled, "Do you have a college? degree?" Complete parts ...

Te proportion of people who love dogs is known to be 75

The proportion of people who love dogs is known to be 75 % Australia wide. A town in far north Queensland is often different in many aspects to the rest of Australia. When 88 families were sampled the proportion who love ...

A 10-year annuity-immediate pays 100 quarterly for the

A 10-year annuity-immediate pays 100 quarterly for the first five years. Starting year 6, the annuity immediate pays 300 quarterly for the remaining five years. There is a nominal annual interest of 8% convertible quarte ...

Please help me study by helping me with this questionnbspif

Please help me study by helping me with this question. If D 0 = $3.50, g (which is constant) = 6.0%, and P 0 = $80, what is the stock's expected dividend yield for the coming year? The formula for calculating the first ...

In a recent year 8415394 male students and 4879215 female

In a recent year, 8,415,394 male students and 4,879,215 female students were enrolled as undergraduates. Receiving aid were 62.9% of the male students and 68.3% of female students. Of those receiving aid, 41.9% of the ma ...

6year 8 coupon bond with semi annual payments par value

6 year, 8% coupon bond with semi annual payments, Par Value = $1000. 1) Find out price of the bond if YTM = 10%. 2) What happens to the bond price if YTM decreases 1 basis point? 3) Is the effect of 1 basis point decreas ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert