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
gogolik [260]
3 years ago
10

A scientist is studying the impact of certain vitamins on a person's ability to remember. The sample size for the experimental g

roup was 25. When a two-tailed t test was calculated, the t statistic came out to be 1.54. What are the percent of variance (r 2) and the size of the effect
Mathematics
1 answer:
vovikov84 [41]3 years ago
3 0

Answer:

0.09 average effect

Step-by-step explanation:

Given that the t statistics = 1.54

Sample size (n) = 25

Therefore, variance = t²/n

Variance = 1.54²/25

Variance = 2.372/25

Variance = 0.09

You might be interested in
(x + 2) is raised to the fifth power. The third term of the expansion is:
morpeh [17]

Answer:

3

Step-by-step explanation:

6 0
3 years ago
Write An algebraic expression with the constant 7 and thee variable y
Snowcat [4.5K]
Y+7
Y is the variable and 7 is the constant.
7 0
3 years ago
Read 2 more answers
If a quadrilateral has exactly 2 lines of symmetry, and both are angle bisectors, then which statement would be true?
MaRussiya [10]

Answer:

the figure could be a rhombus because the 2 lines of symmetry bisect the angles

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the equation of the line perpendicular to y=−2 that passes through the point (4, −2).
vfiekz [6]

Answer:

x = 4

Step-by-step explanation:

y = - 2 is the equation of a horizontal line parallel to the x- axis.

A perpendicular line is therefore a vertical line parallel to the y- axis with equation

x = c

where c is the value of the x- coordinates the line passes through.

The line passes through (4, - 2 ) with x- coordinate 4 , thus

x = 4 ← equation of perpendicular line

5 0
3 years ago
Please help with this question!
Nostrana [21]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

a ) Two matrices cannot be multiplied.

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

b )

The answer is | 20 - 4 - 12 |

| 8 2 19 - |

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

7 0
3 years ago
Other questions:
  • I need help on this math question:
    15·1 answer
  • 72000 divided by what = 200
    13·1 answer
  • The lengths of the sides of a right triangle can be described by the equation a2 + b2 = c2, where a and b are the lengths of the
    8·2 answers
  • alyssa bought a microwave $30,000 in the year 2007 it loses it value by 5% oer year what is the value of the microwave in the ye
    7·1 answer
  • Please help me ASAP!!!
    10·1 answer
  • Evaluate the Expression<br><br>If x = -3, y = 6, and z = -5<br><br>-15 + x + y =​
    14·1 answer
  • Find the sum or difference of this polynomial. <br> (3x^3+10x+5)-(x^3-4x+6)
    15·1 answer
  • Find c in this special right triangle. *<br><br><br><br> Please help it’s due in an hour!
    12·1 answer
  • Answer this question to get marked as brainliest!!!!
    6·1 answer
  • 12c : 48c simplest form
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!