1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hitman42 [59]
3 years ago
11

A research organization wanted to estimate the average number of hours a college student sleeps per night during the school year

. After randomly sampling 150 college students, the research organization determined the following 95% confidence interval: LaTeX: \left(7.1,7.5\right)( 7.1 , 7.5 ) hours per night.
Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
6 0

Answer:

The average number of hours slept per night during the school year by these 150 college​ students is 7.3 hours.

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population mean (<em>μ</em>) is:

CI=\bar x\pm z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

In this question we need to compute the average number of hours slept per night during the school year for these 150 college​ students.

To compute the value of the sample mean the formula is:

\bar x=\frac{UL+LL}{2}

Th 95% confidence interval for estimating the average number of hours a college student sleeps per night during the school year is:

CI = (7.1 hours, 7.5 hours)

Compute the value of sample mean as follows:

\bar x=\frac{UL+LL}{2}

  =\frac{7.5+7.1}{2}

  =\frac{14.6}{2}

  =7.3

Thus, the average number of hours slept per night during the school year by these 150 college​ students is 7.3 hours.

You might be interested in
Which value is equivalent to cos 10°?<br> sin 30°<br> O sin 25°<br> O sin 70°<br> O sin 80°
Sauron [17]

Answer:

13

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A piece of machinery depreciates $5000 the first year,
eimsori [14]

Answer:

A- $3500

Step-by-step explanation:

The depreciation rate is $300

$5000, $4700, $4400

$300 x 3 = 900

$4400 - 900 =

$3500.

4 0
3 years ago
$59.99 if it where on sake for 25% off
gulaghasi [49]
The item would cost approximately $45. You can do this by taking the price of the item ($60) and multiply by the percent (25%). 60 x 0.25 = 15. That is the discount you would subtract from the item itself. Now you would take the original price ($60) and subtract the discount ($15). 60 - 15 = 45.
6 0
3 years ago
Read 2 more answers
How to find these key features to sketch a rough graph
Ivahew [28]
There’s no question
8 0
2 years ago
Consider the function y=0.88(1.1)x.identify what type of function this is
lara31 [8.8K]

Answer:

A

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • a large bench is 7 1/6 feet long. it is 17 inches longer than the shorter bench. how many inches long is the shorter bench
    12·2 answers
  • 1/2 +3/4 simplest form ??
    11·1 answer
  • Which solid figure could be formed from the net shown?
    6·1 answer
  • Solve for x. <br><br> -3x + 4 = -8
    11·2 answers
  • How big is the earth
    6·1 answer
  • I NEED HELP PLEASE, THANKS! :)
    7·1 answer
  • Emma is having a slumber party. She orders 2 pizzas, each cut into 12 equal slices
    14·1 answer
  • The foot of the ladder is 10 feet from the wall. The ladder is 2 feet longer than the height that it reaches on the wall. What i
    6·2 answers
  • Please help I’ll give 5 star
    14·2 answers
  • What dose this equal 8n - 3 = -53
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!