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
loris [4]
3 years ago
10

Andrea is told that the means of two groups in a study were statistically significant. She knows the means and standard deviatio

ns of the two groups and is interested in calculating an estimate of effect size. Given this information, which effect size estimate should she calculate
Mathematics
1 answer:
salantis [7]3 years ago
5 0

Answer:

Cohen's D

Step-by-step explanation:

Cohen's D is a statistic that measures effect size. It shows standardised difference between 2 means.

Effect size is defined as how large the effect of a something is or its magnitude.

Cohen's D works effectively when the sample is >50 (that is for large samples). However a correction factor can be used to make results from small samples more accurate

The formular for Cohen's D is:

D = (mean1 - mean2) ÷ (√({standard deviation1}^2 + {standard deviation 2}^2)/2)

This is the most appropriate method in the given scenario

You might be interested in
How to do question 5 and 6. Can you explain the first one which is A for 5 and 6?<br><br>Thank you​
Illusion [34]

for 6

in a

given

slope(m)=1

point=(2,-4)=(x1,y1)

we know

equation of straight line

y-y1=m(x-x1)

y+4=1(x-2)

y+4=x-2

therefore x-y-6=0 is the required equation

substituting with ax+by+c=0 we get

a=1

b= -1

c= -6

4 0
3 years ago
Someone please help me ✨
DedPeter [7]

Okay, so keeping mind that the equation for area is A = L x W, look at the measurements you already have. 5.5 x 10^5 is the length, and 4.2 x 10^4 is the width. Switch them into full form and use a calculator to multiply the two for the area in meters.

550000 x 42000 = 23100000000, which in scientific form is 2.31 × 10^10. So that's answer one.

For the second, in kilometers, just take the full measurement you already have, 23100000000 m, transfer it into kilometers, 23100000 km, and then find its scientific notation, 2.31 × 10^7. That's answer two.

To answer the last question for which is more suitable, just consider what number you'd prefer to look at: a bigger number or a smaller one. Since the kilometer measurement number is smaller, its correct.

Summarily, the answers are 2.31 × 10^10, 2.31 × 10^7, and square kilometers, in that order.

6 0
2 years ago
Can someone please give me the (Answers) to this? ... please ...<br><br> I need help….
Mrac [35]

Answer:

Step-by-step explanation:

5. x/7 = 9/x

x^2 = 63

x= 3\sqrt{7}

6. x/84 = 16/x

x^2 = 1344

x=8\sqrt{21}

7. x/12 = 12/16

16x=144

x=9

8. x/48 = 48/64

64x=2304

x=36

5 0
1 year ago
Read 2 more answers
a pumpkin falls of a fence that is 3.0 m high (Accelerations due to gravity is 10 m/s *squared ) How fast does the pumpkin hit t
Rufina [12.5K]
3 seconds.

********************
3 0
3 years ago
The city is planning to add a fish pound to a neighborhood park. the figure below is a scale drawing of the fish pound. its scal
CaHeK987 [17]

Answer: Sorry if it's wrong I hope I helped you

5 0
1 year ago
Other questions:
  • Three friends go to the local farmers marketing. Ashley spends $8.25. Natalie spends 4 times as much as Ashley. Patrick spends $
    9·2 answers
  • Let C be the positively oriented square with vertices (0,0), (1,0), (1,1), (0,1). Use Green's Theorem to evaluate the line integ
    8·1 answer
  • Determine which characteristics are true of vertical angles.
    6·1 answer
  • Solve this equation <br> -6-10a= -156
    7·1 answer
  • What is the equations for f(x)?
    9·1 answer
  • Graph ATUV with vertices T(-3, 2), UC-1, 0), and (4,-2) and its image after the glide reflection.
    12·1 answer
  • ••••••••••••••••••••••••••••••••••••••••••
    7·2 answers
  • Shirts cost $9.00 each. There is a 9% sales tax. If Mrs. Meagher buys three shirts, how
    11·1 answer
  • Can someone help me with this?
    14·1 answer
  • 65/100=55.24/x what is the answer?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!