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
charle [14.2K]
3 years ago
14

For a repeated-measures study comparing two treatment conditions, a researcher obtains a sample of n = 9 difference scores with

a mean of MD = 4 and a variance of s2 = 36. What is the value for the repeated-measures t statistic for these data?​
Mathematics
1 answer:
Ratling [72]3 years ago
8 0

Answer:

Step-by-step explanation:

Given that for a repeated measures study comparing two treatment conditions, an experiment was conducted.

n=9:  Mean difference =4:

Variance = s^2 =36

Std error = \frac{s}{\sqrt{n} } =\frac{6}{3} \\=2

t statistic = Mean diff/SE

= \frac{4}{2} =2

You might be interested in
In March, a family starts saving for a vacation they are planning for the end of August. The family expects the vacation to cost
Mars2501 [29]
A. They will need $1093 more
6 0
3 years ago
Factorize:<br>(2a - b)² - (a - 2b)²​
bagirrra123 [75]

Answer:

3(a - b)(a + b)

Step-by-step explanation:

Factorize: (2a - b)² - (a - 2b)²​

  • Different of Perfect a Square rule: a²​ - b²​ = (a + b)(a - b)

(2a - b)² - (a - 2b)²​ = [(2a - b) + (a - 2b)] × [(2a - b) - (a - 2b)]

1. Distribute and Simplify:

Distribute the (+) sign on the first bracket and simplify: [(2a - b) + (a - 2b)] → 2a - b + a - 2b → (3a - 3b)

Distribute the (-) sign on the first bracket and simplify: [(2a - b) - (a - 2b)] → 2a - b – a + 2b → (a + b)

We now have:

(3a - 3b)(a + b)

2. Factor out the Greatest Common Factor (3) from 3a - 3b:

(3a - 3b) → 3(a - b)

3. Add "(a + b)" back into your factored expression:

3(a - b)(a + b)

Hope this helps!

7 0
2 years ago
Read 2 more answers
Solve the system of equations using the addition method.
stepladder [879]

Answer:

A) 5x - 2y = 12

B) 3x + 2y = 36  Adding both equations eliminates "y"

8x = 48

x = 6   Putting x=6 into equation B we get

3*6 + 2y = 36

2y = 18

y = 9

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is the given point on the line of this equation y +2 = 5/3(x-3)
8_murik_8 [283]

Answer:

6

Step-by-step explanation:

Solve x then y after..

4 0
2 years ago
Helppppppp! 15 points!
Vika [28.1K]

{\boxed{\mathcal{\purple{D.\:81}}}} ✅

\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}

( {3})^{ \frac{11}{5} }  \div  {3}^{ \frac{ - 9}{5} }  \\  \\=(  {3})^{ \frac{11}{5} - ( \frac{ - 9}{5} ) }  \\ \\ = ( {3})^{ \frac{11}{5}   +  \frac{9}{5} }  \\ \\ = ( {3})^{ \frac{11 + 9}{5} } \\ \\  = ( {3})^{ \frac{20}{5} }  \\ \\  = ( {3})^{4}  \\ \\ = ( \: 3 \times 3 \times 3 \times 3 \: ) \\ \\ = 81

<u>Note</u>:-

{a}^{m}  \div  {a}^{n}  =  {a}^{m - n}

\sf\red{(-)\:x\:(-)\:=\:+}

\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}

4 0
2 years ago
Other questions:
  • The volume of a large balloon after it is punctured is represented by the following table:
    14·1 answer
  • What inequalities have the solution set graphed in the number line? Select two options.
    15·1 answer
  • 2/3 + -1/16= What is the fraction?
    14·1 answer
  • A football team gained 9 yards on one play and then lost 22 yards on the next. Write a sum of integers to find the overall chang
    14·2 answers
  • It is estimated that 52% of drivers text while driving. How many people should a police officer expect to pull over until she fi
    6·1 answer
  • What is x-4y=28 2x+y=2 on a graph
    11·1 answer
  • What is the equation of the line that passes through the point (-1,4) and has a<br> slope of -5
    9·1 answer
  • 6 times the sum of y and 11
    12·1 answer
  • Solve with work please
    15·1 answer
  • The Boyle family drove at an average speed of 60 miles per hour. They drove for 4 hours. How far did the Boyle family drive?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!