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
AleksandrR [38]
3 years ago
9

In a recent​ study, volunteers who had 8 hours of sleep were three times more likely to correctly on a math test than were​ slee

p-deprived participants.
1) Identify the sample used in the study.
A) The sample is the math questions in the study.
B) The sample is the responses of the volunteers in the study.
C) The sample is the amount of sleep the volunteers got in the study.
D) The sample is the​ sleep-deprived participants in the study. ​
2) What is the​ sample's population?
A) The population is the collection of all the math questions from the math test.
B) The population is the collection of the responses of all individuals who completed the math test.
C) The population is the collection of all the individuals who completed the math test. ​
3) Which part of the study represents the descriptive branch of​ statistics?
Mathematics
1 answer:
aliya0001 [1]3 years ago
3 0

1) Identify the sample used in the study: B) The sample is the responses of the volunteers in the study

2)  What is the​ sample's population: B) The population is collected of the response of all individuals who completed the math test

3) Which part of the study represents the descriptive branch of​ statistics:

individuals who are not sleep deprived will be more likely to answer math questions correctly than individuals who are sleep deprived.

hope i helpd

-lvr

You might be interested in
Find the missing terms of the geometric sequence.
Debora [2.8K]
Funny cause I just did something similar a few minutes ago

6 0
2 years ago
I NEED HELP PLZ I WILL GIVE THANKS AND BRAINLIST
ratelena [41]

Answer:

Point B

Step-by-step explanation:

Inside the darkest part where both inequalities are true

7 0
3 years ago
I need help. what is the answer to this question. a.b.c. or d
bekas [8.4K]
A because the median is 0.1 and the mean is much higher
7 0
3 years ago
A car travelled 216km at an average speed of 48km/h.On the return journey the average speed increased to 72km/h.Calculate the av
mel-nik [20]

Answer:120km/hr

Step-by-step explanation:

3 0
3 years ago
Rewrite the system of linear equations as a matrix equation AX = B.
iren2701 [21]

Answer:

\left[\begin{array}{ccc}1&2&5\\1&1&1\\4&6&5\end{array}\right]*\left[\begin{array}{ccc}x1\\x2\\x3\end{array}\right]=\left[\begin{array}{ccc}5\\6\\7\end{array}\right]

Step-by-step explanation:

Let's find the answer.

Because we have 3 equations and 3 variables (x1, x2, x3) a 3x3 matrix (A) can be constructed by using their respectively coefficients.

Equations:

Eq. 1 : x1 + 2x2 + 5x3 = 5

Eq. 2 : x1 + x2 + x3 = 6

E1. 3 : 4x1 + 6x2 + 5x3 = 7

Coefficients for x1 ; x2 ; x3

From eq. 1 : 1 ; 2 ; 5

From eq. 2 : 1 ; 1 ; 1

From eq. 3 : 4 ; 6 ; 5

So matrix A is:

\left[\begin{array}{ccc}1&2&5\\1&1&1\\4&6&5\end{array}\right]

And the vector of vriables (X) is:

\left[\begin{array}{ccc}x1\\x2\\x3\end{array}\right]

Now we can find the resulting vector (B) using the 'resulting values' from each equation:

\left[\begin{array}{ccc}5\\6\\7\end{array}\right]

In conclusion, AX=B is:

\left[\begin{array}{ccc}1&2&5\\1&1&1\\4&6&5\end{array}\right]*\left[\begin{array}{ccc}x1\\x2\\x3\end{array}\right]=\left[\begin{array}{ccc}5\\6\\7\end{array}\right]

7 0
3 years ago
Other questions:
  • The mean of <br>4.8,1.5,6.3,6.7,8.3 ​
    11·1 answer
  • How do I attach the diagram of my math problem?
    15·1 answer
  • 35. Luke and Matthew ran a lemonade
    5·1 answer
  • Which relation is not a function?
    15·1 answer
  • Evaluate if x = –14.6 and y = 2.5. –x – |y|
    5·1 answer
  • Find the values of x and y.
    7·1 answer
  • Solve. Round your answer to the nearest thousandth.
    14·1 answer
  • there are 2 numbers. they both have a highest common factor of 3, and a lowest common multiple of 45. what are the numbers.
    13·1 answer
  • Pls help the first correct answer gets brainleist​
    12·1 answer
  • Find sin θ if θ is in Quadrant III and tan θ = -1/5
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!