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Nana76 [90]
3 years ago
5

Some athletes use mental practice to try to improve performance. In one study, a group of people threw darts 24 times at a targe

t. Next, half of the group mentally practiced throwing 24 darts. Finally, the entire group threw 24 more darts. What were the results?
Social Studies
1 answer:
asambeis [7]3 years ago
4 0

Answer:

48 darts were thrown in all.

Explanation:

This is because the other 24 were only thrown in their heads, not literally.

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3 years ago
For an exam with a mean of M = 74 and a standard deviation of s = 8, Mary has a score of X = 80, Bob’s score corresponds to z =
tamaranim1 [39]

Given Information:

Mean = μ = 74

Standard deviation = σ = 8

Mary's score = x = 80

Bob’s score = z = +1.50

Sue’s score = above the mean by 10 points

Required Information:

If the students are placed in order from smallest score to largest score, what is the correct order?

Answer:

Mary = 80, Sue = 84, Bob = 86

Explanation:

Bob's score:

z = (x - μ)/σ

x - μ = zσ

x = zσ + μ

x = 1.50*8 + 74

x = 12 + 74

x = 86

Sue's score:

x = u + 10

x = 74 + 10

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Mary's score:

x = 80

From the smallest score to largest score

Mary = 80, Sue = 84, Bob = 86

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3 years ago
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