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
arsen [322]
3 years ago
12

To determine her power usage​, Keri divides up her day into three​ parts: morning,​ afternoon, and evening. She then measures he

r power usage at 4 randomly selected times during each part of the day. What type of sampling did she use?
Mathematics
1 answer:
marusya05 [52]3 years ago
3 0

Answer:

Stratified Sampling

Step-by-step explanation:

Since Keri divides the day into different strata and each unit is selected from each strata randomly. So, it is Stratified Sampling.

Further, In Stratified Sampling population is divided into several groups such that within the group it is homogeneous and between the group it is heterogeneous. And now a selection of each stratum and unit has an equal chance of selection.

You might be interested in
Help me pls help me
coldgirl [10]
1st
0.3/100*15000
=45
2nd
40/200*100
=20
=
3 0
3 years ago
Read 2 more answers
WILL GIVE 20 points PLEASE ANSWER ITS URGENT
babunello [35]
The answer for the first blank would be 1/2 because it had been dilated down to half it's original size. I hope this helps!
8 0
3 years ago
Dont skip plzzzzzzzzzzzzzzzzzzzzzzzz
natka813 [3]

Answer:

B

Step-by-step explanation:

The slope is rise over run, meaning it is 3/4. The y-intercept is 2, making the equation y = (3/4)x + 2

5 0
3 years ago
On a map, 1 inch equals 25 miles.Two cities are 3 inches apart on the map.What is the actual distance between the cities?
SVEN [57.7K]

Answer:

75 miles

Step-by-step explanation:

We are given the scale on the map, which is that 1 inch is 25 miles in real life. We can write that as a ratio of 1 inch: 25 miles. Now say we have two inches, then we have 50 miles because we add on another 25 miles, then we do that again and we get to 75 miles.

Another way to think about it (more complicated):

you can represent ratios as a fraction

so we do 1/25=3/x

To find x, we can do (25*3)/1 which equals 75, if you don't know what I did there then you don't know, sorry!

you can also do it in a different way

same scenario though

you represent it as a fraction

and do 1/25=3/x. We see that the ratio from 1 to 3 is multiplied by 3 so that means the ratio from 25 to x is also going to be multiplied by 3, and 25 multiplied by 3 is 75.

Please let me know if you have any questions.

5 0
3 years ago
Read 2 more answers
2y+3=-2x written in slope intercept form
Alex777 [14]
Y=-x-3/2
That's it written in slope intercept form
3 0
3 years ago
Other questions:
  • A(-5, -1) and B(4, 3.5)
    8·1 answer
  • How to simplify fractions with negative exponents in the denominator and numerator?
    13·1 answer
  • Simplify (x - square root 7)^2
    8·1 answer
  • What is the scientific notation of 0.0008331
    9·2 answers
  • Which of these is equal to cos 47°? <br> a. cos 43° <br> b. sin 43° <br> c. tan 43° <br> d. cos 133°
    10·2 answers
  • CAN ANYONE PLS HELP ME IN THIS PLS I WILL MARK U AS BRAINLIEST :) and pls show work
    9·2 answers
  • This is the power to which A number is raised or the number of times it is multiplied by itself
    13·1 answer
  • Which of the following can be used to evaluate the series 224)***,
    14·1 answer
  • 69 minutes equals how many hours and minutes?
    10·1 answer
  • Connor invested $59,000 in an account paying an interest rate of 2.6%
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!