Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. more than 100 million people around the world are

More than 100 million people around the world are not getting enough sleep; the average adult...

80.2K

Verified Solution

Question

Statistics

More than 100 million people around the world are not gettingenough sleep; the average adult needs between 7.5 and 8 hours ofsleep per night. College students are particularly at risk of notgetting enough shut-eye. A recent survey of several thousandcollege students indicated that the total hours of sleep time pernight, denoted by the random variable X, can be approximated by anormal model with E(X) = 6.79 hours and SD(X) = 1.22 hours.Question 1. Find the probability that the hours of sleep per nightfor a random sample of 4 college students has a mean x between 6.62and 6.95. .0039 Incorrect: Your answer is incorrect. (use 4 decimalplaces in your answer) Question 2. Find the probability that thehours of sleep per night for a random sample of 16 college studentshas a mean x between 6.62 and 6.95. (use 4 decimal places in youranswer) Question 3. Find the probability that the hours of sleepper night for a random sample of 25 college students has a mean xbetween 6.62 and 6.95. (use 4 decimal places in your answer)Question 4. The Central Limit Theorem was needed to answerquestions 1, 2, and 3 above.

Answer & Explanation Solved by verified expert
4.0 Ratings (636 Votes)
1 679 122 n 4 we need to    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Geometry
1.2K views

G A Determine which of the following values are correct Select all that apply x...

Basic Math
1.2K views

Find the standard deviation for the group of data items 17 18 19 19 20...

Basic Math
1.2K views

The population of Boomtown is currently 11000 and expected to grow by 3 5 over...

Basic Math
1.2K views

You need 250 mL of a 20% alcohol solution. On hand, you have a 5%...

Calculus
1.2K views

Differentiate the function y y In 3 8x 3 8x

Algebra
1.2K views

O 1 1 24 1 10 3V O U Ou U 0 U 3 3V...

Accounting
1.2K views

Part A: A patent was purchased on ten first day of the fiscal year for...

Accounting
1.2K views

The Dawg corporation owns 7.000000000000001% of Company A and 31% of Company B. Dividends received...

Accounting
1.2K views

Problem 2 On January 1, 2015, a company issued 10-year, 10% bonds payable with a...

Accounting
1.2K views

During the current year, Central Auto Rentals purchased 60 new automobiles at a cost of...

Accounting
1.2K views

Tulip Co. sells its plant cartons at $5.00 per unit. If fixed costs are $200,000...

Finance
1.2K views

A proposed cost-saving device has an installed cost of $740,000. The device will be used...