Question

A poll reported that 63​% of adults were satisfied with the job the major airlines were...

A poll reported that 63​% of adults were satisfied with the job the major airlines were doing. Suppose 15 adults are selected at random and the number who are satisfied is recorded.

(c) Find and interpret the probability that at least 11 of them are satisfied with the airlines.

The probability that at least 11 adults are satisfied with the airlines is ____

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

P(satisfied) = 0.63

n = 15

(C) P(at least 11 are satisfied )

At least 11 are satisfied which mean 11 or 12 or 13 or 14 or all 15 are satisfied.

P(at least 11 are satisfied ) = P(11) + P(12) + P(13) + P(14) + P(15)

P(at least 11 are satisfied ) = P(11) + P(12) + P(13) + P(14) + P(15) = 0.2938

ANS : Hence the probabiltiy that atleast 11 adults are satisifed is 0.2938

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A poll reported that 63% of adults were satisfied with the job the major airlines were...
A poll reported that 63% of adults were satisfied with the job the major airlines were doing. Suppose 25 adults are selected at random and the number who are satisfied are recorded. Complete parts A.) through D.) Part A.) Find and Interpret the probability that exactly 14 of them are satisfied with the Airline. Part B.) Find and interpret the probability that at least 17 of them are satisfied with the airlines Part C.) Find and interpret the probability that...
A poll reported that 65 ​% of adults were satisfied with the job the major airlines...
A poll reported that 65 ​% of adults were satisfied with the job the major airlines were doing. Suppose 25 adults are selected at random and the number who are satisfied is recorded. Complete parts​ (a) through​ (e) below. (c) Find and interpret the probability that at least 21 of them are satisfied with the airlines.
A CNN/USA Today/Gallup poll in April 2005 reported that 75% of adult Americans were satisfied with...
A CNN/USA Today/Gallup poll in April 2005 reported that 75% of adult Americans were satisfied with the job the major airlines were doing. Suppose 10 adult Americans are selected at random and the number who are satisfied is recorded. Find the probability that 5 or more (5,6,7,8,9,10 then add all together) are satisfied with the airline.
According to a national poll, 41% of American workers said that they were completely satisfied with...
According to a national poll, 41% of American workers said that they were completely satisfied with their job. Find the probability that in a random sample of 1140 American workers, the proportion of workers who are completely satisfied with their current job is between 0.4 and 0.44.
Based on a​ poll, among adults who regret getting​ tattoos, 11​% say that they were too...
Based on a​ poll, among adults who regret getting​ tattoos, 11​% say that they were too young when they got their tattoos. Assume that four adults who regret getting tattoos are randomly​ selected, and find the indicated probability. Complete parts​ (a) through​ (d) below. a. Find the probability that none of the selected adults say that they were too young to get tattoos. nothing ​(Round to four decimal places as​ needed.) b. Find the probability that exactly one of the...
A recent Gallup Poll found that 95% of American adults are "satisfied with their personal life."...
A recent Gallup Poll found that 95% of American adults are "satisfied with their personal life." Suppose you take a random sample of 5 Americans and ask each one if they are "satisfied with their personal life" and record the number who report personal life satisfaction. Use this experiment to answer the following questions. Round solutions to four decimal places, if necessary. a. Create a binomial probability distribution (table) for this experiment. b. Calculate the mean of the binomial distribution....
Employee Satisfaction Rates: A recent poll suggests that 48% of Americans are satisfied with their job....
Employee Satisfaction Rates: A recent poll suggests that 48% of Americans are satisfied with their job. You have a company with 226 employees and a poll suggests that 89 of them are satisfied (about 39%). (a) Assume the 48% general satisfaction rate is accurate. In all random samples of 226 Americans, what is the mean and standard deviation for the number of people satisfied with their job? Round both answers to 1 decimal place. \muμ = \sigmaσ = (b) Convert...
Based on a poll, among adults who regret getting tattoos, 19% say that they were too...
Based on a poll, among adults who regret getting tattoos, 19% say that they were too young when they got their tattoos. Assume that eight adults who regret getting tattoos are randomly selected, and find the indicated probability. Complete parts (a) through (d) below. a. Find the probability that none of the selected adults say that they were too young to get tattos. b. Find the probability that exactly one of the selected adults says that he or she was...
Based on a poll, 60% of adults believe in reincarnation. Assume that 8 adults are randomly...
Based on a poll, 60% of adults believe in reincarnation. Assume that 8 adults are randomly selected, and find the indicated probability. A. What is the probability that exactly 7 of the selected adults believe in reincarnation? b. What is the probability that all of the selected adults believe in reincarnation? c. The probability that at least 7 of the selected adults believe in reincarnation? d. If 8 adults are randomly selected, is 7 a significantly high number who believe...
Based on a recent Harris poll, 85% of adults know what Twitter is. If five random...
Based on a recent Harris poll, 85% of adults know what Twitter is. If five random adults are selected, find: The probability that none of the five adults know of Twitter The probability that 4 or fewer adults know of Twitter The probability that the number of adults who know of Twitter is at least one
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT