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HACTEHA [7]
3 years ago
8

You compare the happiness of people forced to smile with those of people forced to frown. Both groups have the same number of pa

rticipants. The mean happiness level in the smile group is 20. The mean happiness level in the frown group is 19. The standard deviation of both groups is 20. The effect size is:_________
Mathematics
1 answer:
gregori [183]3 years ago
3 0

Answer:

0.05

Step-by-step explanation:

The Effect size  = (Difference in Means) / (Standard deviation)

= (20 - 19) / 20

= 1/20

= 0.05

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An electronics store has portable CD players on sale for $54.95. If the local sales tax is 6.5%, what is the total cost of a CD
borishaifa [10]

Answer:

Total cost of CD player = $58.52

Step-by-step explanation:

Given data:

Price of CD player on sale= $54.95

Local sales tax = 6.5%

Total cost of CD player = ?

Solution:

Local sales tax= (6.5 * 54.95)/100 = $3.57

Total cost of CD player = Price of CD player on sale + Local sales tax

                                       =  $54.95 + $3.57

         Total cost of CD player = $58.52



7 0
4 years ago
Solve for k:<br>1/3k + 1/2 = 1/4k
son4ous [18]
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3 0
3 years ago
Which of the following could be the equation of the graph shown below
irina [24]
-4x + 2y = -6
2y = 4x - 6
y = 2x - 3....y int = -3 , x int = (3/2,0)

I believe it is going to be : -4x + 2y = -6

4 0
3 years ago
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Compute: 3/8 divided -0.25
Makovka662 [10]

Answer:

-1.5

Step-by-step explanation:

3/8 is 0.375 in decimal form

3 0
3 years ago
Read 2 more answers
A scuba diver dives to a depth of 50 feet below sea level. To get a closer look at a hammer head shark, he ascends (goes up) 30
Julli [10]

Answer:

-70

Step-by-step explanation:

3 0
3 years ago
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