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
Elden [556K]
3 years ago
5

College students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. If the amount of sleep is normall

y distributed, what proportion of college students sleep for more than 9.6 hours? _
Mathematics
1 answer:
Soloha48 [4]3 years ago
7 0

Answer:

4.27%

Step-by-step explanation:

We have been given that college students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. We are asked to find the probability of college students that sleep for more than 9.6 hours.

We will use z-score formula to solve our given problem.

z=\frac{x-\mu}{\sigma}

z = z-score,

x = Random sample score,

\mu = Mean,

\sigma = Standard deviation.

Before substituting our given values in z-score formula, we need to convert 35 minutes to hours.

35\text{ min}=0.58\text{ Hour}

z=\frac{9.6-8.6}{0.58}

z=\frac{1}{0.58}

z=1.72

Now, we need to find P(z>1.72).

Using formula P(z>a)=1-P(z, we will get:

P(z>1.72)=1-P(z

Using normal distribution table, we will get:

P(z>1.72)=1-0.95728

P(z>1.72)=0.04272

0.04272\times 100\%=4.272\%

Therefore, 4.27% of college students sleep for more than 9.6 hours.

You might be interested in
Percy plotted the points (5,6)
Annette [7]

Answer:

1,6 and 6,6

Step-by-step explanation:

since they are on the same y-axis, changing the x-value shouldn't matter.

3 0
3 years ago
Read 2 more answers
The expression below represents the number of boxes of cookies sold by a girl scouts troop with 14 members at the school fair, w
Zinaida [17]
I think it would be The first term indicates that the 14 girl scouts each sold 22 boxes of cookies per additional day of the fair. The second term indicates that the 14 girl scouts each sold 25 boxes of cookies on the first day of the fair.
4 0
3 years ago
. 25% of 900 = 225, 25% is called____ *
posledela

Answer:

25% is called a quarter of 900

Step-by-step explanation:

{ \tt{25\% =  \frac{25}{100}  =  \frac{1}{4} }} \\

4 0
2 years ago
Read 2 more answers
I need Help!
Shalnov [3]

Answer:

about 20

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What does 3x+2x+4+2 equal
Reptile [31]

Answer:

5x + 6

Step-by-step explanation:

3X + 2X = 5X

4 + 2 = 6

5X + 6 IS SIMPLIST FORM

6 0
3 years ago
Read 2 more answers
Other questions:
  • Tamara is planting bushes around her house. So far today she has planted 5 bushes and she wants to plant at least 12 bushes toda
    15·1 answer
  • In CAT entrance examination paper there are 3 sections, each containing 5 questions. A candidate has to solve 5,
    13·1 answer
  • One month Dale rented 8 movies and 4 video games for a total of $49. The next month he rented 3 movies and 2 video games for a t
    12·2 answers
  • Verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to
    9·1 answer
  • Simplify the given expression. Write your answer with positive exponents.
    11·1 answer
  • Please hurry I will mark you brainliest
    10·1 answer
  • Which set of ordered pairs does not represent a function? NEED THIS ASAP
    13·1 answer
  • Frank and his family went on vacation one summer, and drove 3,000 miles in 10 days. If they drove an equal distance every day, h
    5·2 answers
  • -1/3(4+z)=-5/6 I need answer ASAP
    8·2 answers
  • What fraction of the rectangle is shaded? PLS PLS PLS help ASAP! Ty
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!