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
USPshnik [31]
3 years ago
10

Which sample is representative of the population being studied?

Mathematics
2 answers:
Lesechka [4]3 years ago
8 0
First, let's break down what the difference between a sample and population is. A sample is a small part or quantity intended to show what the whole is like. A population is all inhabitants of a town, country, or the world. Samples are only representative of the population if the data collected is being collected in a fair manner. In answer choices A - C, the researcher is collecting data in locations specific to what is being studied. The outcome is likely to be bias because of the method in which the data is being collected. It is for that reason that the correct answer is D. To learn how many students at her school spend more than $10 on books in a month, Mia speaks to every sixth student she meets in the school hallway. 
fomenos3 years ago
7 0

Answer:

D

Step-by-step explanation:

You might be interested in
I need help is it A B C or D
Evgesh-ka [11]
Answer is A, different slopes
enjoy
6 0
3 years ago
Read 2 more answers
Solve for x<br><br> 2cos(x + 40 ^ 0) = 1/2 for r 0&lt;= x&lt;=360^<br><br> Worth 6 marks
Mama L [17]
SOLVE THE EQUATIONS
6 0
2 years ago
16 PTS HAPPY HOLIDAYS
solong [7]
She is 12 feet above the ground.
3 0
3 years ago
Which of the triangles in the diagram are congruent?
7nadin3 [17]

Answer:

I would like to answer but where is the diagram. Download it to this page and i will answer your question. Have a great day

Step-by-step explanation:

7 0
3 years ago
A standard number cube has 6 sides labeled 1 to 6. apu rolls a standard number cube 30 times. How many times can
Leviafan [203]

Answer:

The expected value of rolling a 5 or 6 is 10.

Step-by-step explanation:

The sample space of rolling a standard number cube is:

S = {1, 2, 3, 4, 5 and 6}

The cube is standard, this implies that each side has an equal probability of landing face-up.

So, the probability of all the six outcomes is same, i.e. \frac{1}{6}.

Now it is provided that Apu rolls the cube <em>n</em> = 30 times.

Let the random variable <em>X</em> represent the value on the face of cube.

The event of rolling a 5 and rolling a 6 are mutually exclusive, i.e. they cannot occur together.

So, P (X = 5 and X = 6) = 0.

Compute the probability of getting a 5 or 6 as follows:

P (X = 5 or X = 6) = P (X = 5) + P (X = 6) - P (X = 5 and X = 6)

                            = P (X = 5) + P (X = 6)

                            =\frac{1}{6}+\frac{1}{6}\\\\=\frac{2}{6}\\\\=\frac{1}{3}

Compute the expected value of rolling a 5 or 6 as follows:

E(X = 5\ \text{or}\ X = 6)=n\times P(X = 5\ \text{or}\ X = 6)

                               =30\times \frac{1}{3}\\\\=10

Thus, the expected value of rolling a 5 or 6 is 10.

8 0
3 years ago
Other questions:
  • × - 2/3=7<br><br> Enter your answer in the box : <br><br> Hurry plz
    9·2 answers
  • Find the solution of the differential equation that satisfies the given initial condition. (du)/(dt) = (2t + sec^2 t)/(2u), u(0)
    5·1 answer
  • It is 170 miles from Bruce’s house to the city where his brother lives. On his last trip to visit his brother, he drove for 2 ho
    12·2 answers
  • SOMEONE PLEASE JUST ANSWER THIS FOR BRAINLIEST!!!
    8·1 answer
  • Bianca and yoko work together to mow the lawn. suppose yoko mow 5/15 of the lawn and bianca m ows 2/5 of the lawn. how much lawn
    10·1 answer
  • X/4 -7=y for x pls help
    5·1 answer
  • How many perfect squares are there between 0 and 150?
    9·1 answer
  • The face of a clock is divided into 12 equal parts. The radius of the clock face is 6 inches. Assume the hands of the clock will
    13·2 answers
  • Can y’all help me on question 12?!
    8·2 answers
  • What is the unit rate per bottle if a pack of 25 bottles of juice sells for $5? (1 point)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!