Question

66​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults....

66​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers is ​ (a) exactly​ five, (b) at least​ six, and​ (c) less than four.

Homework Answers

Answer #1

X ~ Binomial (n,p)

Where n = 10 , p = 0.66

Binomial probability distribution is

P (X) = nCx px (1 - p)n-x

a)

P (X = 5) = 10C5 0.665 0.345

= 0.1434

b)

P( X >= 6) = P (X = 6) + P (X = 7) + P (X = 8) + P (X = 9) + P (X = 10)

=  10C6 0.666 0.344 +10C7 0.667 0.343 +10C8 0.668 0.342 +10C9 0.669 0.34 +10C10 0.6610 0.340

= 0.7730

c)

P( X < 4) = P (X <= 3)

= P (X = 0) +P (X = 1) +P (X = 2) +P (X = 3)

= 10C0 0.660 0.3410 +10C1 0.661 0.349 +10C2 0.662 0.348 +10C3 0.663 0.347

= 0.0220

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
59​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults....
59​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers is ​ (a) exactly​ five, (b) at least​ six, and​ (c) less than four.
47​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults....
47​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers is ​ (a) exactly​ five, (b) at least​ six, and​ (c) less than four. ​
61​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults....
61​% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers is ​ (a) exactly​ five, (b) at least​ six, and​ (c) less than four. ​(a) ​P(5) = ? ​(Round to three decimal places as​ needed.)​ (b) ​P(x≥​6) = ? ​(Round to three decimal places as​ needed.)​ (c) ​P(x<​4) = ? ​(Round to three decimal places as​ needed.)
56% of us adults have very little confidence in newspaper. you randomly select 10 us adults....
56% of us adults have very little confidence in newspaper. you randomly select 10 us adults. find the probability that the number of us adults who have very little confidence in newspaper is exactly five at least six and less than four. a P(5) round to 3 decimal place
In a typical day, 61% of U.S. adults go online to get news. You randomly select...
In a typical day, 61% of U.S. adults go online to get news. You randomly select five U.S. adults. Find the probability that the number of U.S. adults who say they go online to get news is a) Exactly 2. b)At least two. c)More than two
44% of men have considered themselves professional baseball fans. You randomly select 10 men and ask...
44% of men have considered themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consider themselves baseball fans is? (a) exactly? five, (b) at least? six, and? (c) less than four
Sixty three percent of adults’ trust newspapers to present news fairly. You randomly select 9 adults....
Sixty three percent of adults’ trust newspapers to present news fairly. You randomly select 9 adults. Find the probability that the number of adults who trust newspapers to present the news fairly is exactly 5. (Do not round values and show all work)
39​% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly...
39​% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly selected. Find the probability that the number of U.S. adults who favor the use of unmanned drones by police agencies is​ (a) exactly​ three, (b) at least​ four, (c) less than eight.
17​% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly...
17​% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly selected. Find the probability that the number of U.S. adults who favor the use of unmanned drones by police agencies is​ (a) exactly​ three, (b) at least​ four, (c) less than eight.
16% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly...
16% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly selected. Find the probability that the number of U.S. adults who favor the use of unmanned drones by police agencies is​ (a) exactly​ three, (b) at least​ four, (c) less than eight (a)P(3)=?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT
Active Questions
  • Management claims the mean income for all senior-level assembly line workers at 3M equals $700 a...
    asked 18 minutes ago
  • Frederick Company has two service departments (Cafeteria Services & Maintenance). Frederick has two production departments (Assembly...
    asked 27 minutes ago
  • The number of "destination weddings" has skyrocketed in recent years. For example, many couples are opting...
    asked 32 minutes ago
  • A six-lane multilane highway (three lanes in each direction) has a peak-hour factor of 0.90, 11-ft...
    asked 34 minutes ago
  • In the sum A→+B→=C→, vector A→ has a magnitude of 13.9 m and is angled 37.5°...
    asked 1 hour ago
  • A restaurant association says the typical household spends a mean of ​$3217 per year on food...
    asked 1 hour ago
  • For the following statements, choose between: false dilemma, slippery slope, begs the question, appeals to ignorance,...
    asked 1 hour ago
  • What are the channels of distribution with foreign markets for Indian canned foods or frozen foods?...
    asked 1 hour ago
  • Question is : Sexual harassment is a claim that must be based on sex. 1. What...
    asked 1 hour ago
  • Protein concentration can be estimated by measuring the absorbance of protein-containing solutons using UV light. Give...
    asked 1 hour ago
  • A team of students opened a soda pop can underwater and collected the gas released from...
    asked 1 hour ago
  • Which of the General Principles of the American Psychological Association relates to maximizing the positive outcomes...
    asked 1 hour ago