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Lesechka [4]
3 years ago
12

A treatment is administered to a sample of n = 9 individuals selected from a population with a mean of LaTeX: \muμ = 80 and a st

andard deviation of LaTeX: \sigmaσ = 12. After treatment, the effect size is measured by computing Cohen’s d, and a value of d = 0.50 is obtained. Based on this information, what is the mean for the treated sample? Group of answer choices
M=6
M=19
M=8
none of above
Mathematics
1 answer:
myrzilka [38]3 years ago
5 0

Answer:

none of the above

Step-by-step explanation:

cohen's d= (Mean of population - mean of sample)/ standard deviation of population

0.5 = (80-mean of sample)/12

Mean of sample= 74

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Which is the best approximation for sqrt 55<br> A) 7<br> B) 7 2/5<br> C) 7 7/15<br> D) 8
Kitty [74]
The best approximation for sqrt 55 would be: B) 7 2/5
5 0
3 years ago
A farmer planted 70 packets of lettuce and 110 packets of pumpkin
storchak [24]

Answer:

7:11

Step-by-step explanation:

You place the numbers in the order given.

70:110

Then reduce it to the lowest term. In this case by 10.

70 ÷10=7

110÷10=11Therefore, the answe is

7:11

6 0
3 years ago
Read 2 more answers
The sum of two integers is 54 and the difference is 10. Fin the integers
Setler [38]

Answer:x + y = 54

x - y = 10

Add them to get: 2x = 64

x = 32

and plugging in x = 32 to either equation: y = 22

Ans: the numbers are 22 and 32

Step-by-step explanation:

4 0
3 years ago
A seagull was flying about sea level looking to catch a fish below sea level. The elevation above sea level was 125 1/2 feet. He
frez [133]

Answer:

The seagull's position halfway is 85.5 feet.

Step-by-step explanation:

The seagull is at 125 1/2 feet above the sea level.

The fish is at 45 1/2 feet below the sea level.

The distance between the seagull and fish = seagull's distance above the sea level + fish's distance below the sea level

                                                  = 125 1/2 + 45 1/2

                                                  = \frac{251}{2} + \frac{91}{2}

                                                  = \frac{342}{2}

                                                  = 171

The distance between the seagull and fish is 171 feet.

Since the seagull stops halfway, then;

seagull's position = \frac{171}{2}

                             = 85.5

The seagull's position halfway is 85.5 feet.

8 0
3 years ago
Y is inversely proportional to x. If y= 400 when x =2 find y when x= 200
o-na [289]

Answer:  4

<u>Step-by-step explanation:</u>

Inversely proportional means xy = k, where k is the constant of proportionality

First, find k when x = 2 and y = 400 ----> 2(400) = k   --> 800 = k

Then, find y when x = 200 (knowing that k = 800)

                                    200y = 800

                                           y = 4

4 0
3 years ago
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