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
kap26 [50]
3 years ago
8

49 students are selected at random from sophomore class 39 from the junior class and 48 from senior class what type of sampling

is used simple random ,stratified , systematic ,convenience
Mathematics
1 answer:
tankabanditka [31]3 years ago
3 0

Answer:

(B)Stratified

Step-by-step explanation:

Stratified sampling refers to a sampling method in which the entire population is first divided into groups/strata before a random sample is taken from each strata.

The school population in this case has been divided into these strata,

  • Sophomore class
  • Junior class; and
  • Senior class

From these classes, a random sample of 49,39 and 48 students respectively was then taken,

You might be interested in
You and your sister rake and pick up leaves from your grandmother' s yard. she says she' lloyd pay you $35.00 for the job. upon
a_sh-v [17]
Each of them would earn 17.5 + 7 = $24.5
7 0
4 years ago
Mr. Smith has had a very good year. It is early November, and he wants to ensure he sets enough money aside to pay his taxes nex
san4es73 [151]
Is there a problem or diagram?
8 0
3 years ago
4(x-5)=4x-20<br><br> solve this equation, and how many solutions are there?
puteri [66]

Answer:

4(x-5)=4x-20

4x-20=4x-20

+<u>20 +20</u>

4x=4x

<u>-4x </u>-4x therefore there's infinite solutions

0=0

4 0
3 years ago
The perimeter of a rectangular is 86 m. If the width were doubled and the length were increased by 22 m, the perimeter would be
Zina [86]
Write them as system of equations:
x=length, y=width
2x+2y=86
4x+2y+22=166


when you solve, then x=length=7, y=width=36
3 0
4 years ago
If x = -4, calculate 2x squared - 5
Varvara68 [4.7K]
You just substitute the value of x in the given equation:


f(x) = 2x^2 - 5

f(-4) = 2 (-4)^2 -5 = 27

f(x) : a name given to the equation
f(-4): refer to the equation when the value of the independent variable x has the value between the brackets.
5 0
3 years ago
Other questions:
  • Cut a piece of 4 3/4 inches wood how much is left if board cutting from is 8 inches long
    14·1 answer
  • Find the point estimate of the proportion of people who wear hearing aids if, in a random sample of 855 people, 47 people had he
    13·1 answer
  • How much should you invest at 4.7% simple interest in order to earn $95 interest in eight months
    5·1 answer
  • 36 is 0.9% of what percent
    12·2 answers
  • Solve: A = 4pir2 for r.
    14·1 answer
  • What is the value of this expression? (−8)^3
    6·1 answer
  • F(x)=(x+2)^2-16 <br> Smaller x =<br> Larger x =
    13·1 answer
  • Round to the nearest thousand then subtract
    6·2 answers
  • In ΔSTU, s = 6.1 cm, t = 3.2 cm and u=7.4 cm. Find the measure of ∠S to the nearest 10th of a degree.
    9·2 answers
  • The measurement of angle DBE is 0.1x-33 and the measurement of angle CBE is 0.3x-39 what's the value of x
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!