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
bagirrra123 [75]
3 years ago
10

Sleeping in college. A recent article in a college newspaper stated that college students get an average of 5.5 hrs of sleep eac

h night. A student who was skeptical about this value decided to conduct a survey by randomly sampling 25 students. On average, the sampled students slept 6.25 hours per night. Identify which value represents the sample mean and which value represents the claimed population mean.
Mathematics
1 answer:
notka56 [123]3 years ago
5 0

Answer:

Sample mean = 6.25 hours per night.

Population mean = 5.5 hrs of sleep each night.

Step-by-step explanation:

A sample mean is the mean of the sample collected. The 25 students surveyed by the student is the sample. The average sleep time derived from the sample is the sample mean.

A population mean is the mean of all the population. Here the population are college students. The population mean is the mean derived from studying the sleep duration of all the population - college students

You might be interested in
What is $7.50 with a added 6% sales price.​
hoa [83]

Answer:

0.0125 dollars per sales

hope this helps

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
What is the equation of the line that passes through the points (-1,3) and (1,11)?
marta [7]

Answer:

y=4x+7

Step-by-step explanation:

You can find the slope of the line by using the formula of change and y over change in x. ∆y/∆x OR (y2-y1)/(x2-x1)

11-3=8

1--1=2

8/2=4

Let's plug in a y value 3.

3=4*-1+b

b=7

Once you found b rewrite your equation in slope intercept form.

y=4x+7

You can check this equation by plugging in the unused coordinate (1,11) and find it balances.

7 0
3 years ago
Mr. Sanchez’s class sold fruit pies for $1.73 each and Mr. Kelly’s class sold bottles of fruit juice for $1.44 each. Together, t
-Dominant- [34]

Answer:

p = 39       f = 44    

Step-by-step explanation:

p = $ 1.73

f = $ 1.44

<u><em>equation </em></u>

p + f = 83

1.73 p + 1.44 (83 - p) = $ 130.83

p = 39 (amount of times fruit pies were sold).

Therefore,

<em>p = 39</em>

<em>f = 44</em>

4 0
2 years ago
Find the area of the figure shown below. Use 3.14 for π and round your answer to the nearest hundredth.
topjm [15]

Answer:

ans: 111.54

Step-by-step explanation:

u can simple do by multiple

5 0
3 years ago
Read 2 more answers
Write the equation of the sphere in standard form. x^2 + y^2 + z^2 + 2x − 4y − 6z = 22
madam [21]

The equation x^{2} +y^{2} +z^{2} +2x-4y-6z=22  in standard form looks like (x+1)^{2} +(y-2)^{2} +(z-3)^{2} =(6)^{2}.

Given equation of sphere be x^{2} +y^{2} +z^{2} +2x-4y-6z=22.

We are required to express the given equation in the standard form of the equation of sphere.

Equation is basically relationship between two or more variables that are expressed in equal to form. Equation of two variables look like ax+by=c. It may be linear equation,quadratic equation, cubic equation or many more depending on the powers of variables. The standard form of the equation of sphere looks like  x^{2} +y^{2} +z^{2} =r^{2}.

The given equation is x^{2} +y^{2} +z^{2} +2x-4y-6z=22.

We have to break 22 which is in right side into various parts according to the left side of the equation.

x^{2} +y^{2} +z^{2} +2x-4y-6z=-1-4-9+36

x^{2} +y^{2} +z^{2} +2x-4y-6z+1+4+9=36

x^{2} +1+2x+y^{2}+4-4y+z^{2} +9-6z=36

x^{2} +(1)^{2} +2*1*x+y^{2} +(2)^{2} -2*2y+z^{2} +(3)^{2} -2*3z=36

(x+1)^{2} +(y-2)^{2} +(z-3)^{2} =(6)^{2}

Hence the equation x^{2} +y^{2} +z^{2} +2x-4y-6z=22  in standard form looks like (x+1)^{2} +(y-2)^{2} +(z-3)^{2} =(6)^{2}.

Learn more about equations at brainly.com/question/2972832

#SPJ4

7 0
2 years ago
Other questions:
  • Pls help with this question. I will give brainliest answer :)
    7·2 answers
  • PLEASSEE HELP!!!! Mr. carter and Ms. torres need two busses to drive their classes to the amusement park. each class needs money
    6·2 answers
  • If sin θ = 1 over 4 and tan θ &gt; 0, what is the value of cos θ?
    15·1 answer
  • Luz bought 4 1/8 pounds of apples her sister bought 3 1/2 pounds of apples how many total pounds of apples do luz and her sister
    13·1 answer
  • The point P(-4, -5) is rotated 180° counterclockwise around the origin. What are the coordinates of the resulting point, P′?
    10·1 answer
  • D= V(x2 - 1)2 + (12 - y1)?
    5·1 answer
  • Maggie drank 4 5 liter of water Monday before going jogging. She drank 2 3 liter of water after her jog. How much water did Magg
    8·1 answer
  • I need help I just don't understand
    12·2 answers
  • Correct answer will get brainliest!! A rectangular prism has dimensions of 8 cm by 9 cm by 10 cm. What is its volume?
    15·2 answers
  • Please help me!<br> [One Step Inequalities]
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!