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Ipatiy [6.2K]
2 years ago
9

Compare the scores: a score of 75 on a test with a mean of 65 and a standard deviation of 8 and a score of 75 on a test with a m

ean of 70 and a standard deviation of 4.
Mathematics
1 answer:
LiRa [457]2 years ago
7 0

Answer:

The Zscore for both test is the same

Step-by-step explanation:

Given that :

TEST 1:

score (x) = 75

Mean (m) = 65

Standard deviation (s) = 8

TEST 2:

score (x) = 75

Mean (m) = 70

Standard deviation (s) = 4

USING the relation to obtain the standardized score :

Zscore = (x - m) / s

TEST 1:

Zscore = (75 - 65) / 8

Zscore = 10/8

Zscore = 1.25

TEST 2:

Zscore = (75 - 70) / 4

Zscore = 5/4

Zscore = 1.25

The standardized score for both test is the same.

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Answer is  -pi

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The value of y varies directly with x. When y=55, x=1/4. Determine the constant of proportionality
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Answer:

<u>k = 220</u>

Step-by-step explanation:

<u>Proportion of y and x</u>

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<u>Given</u> :

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<u>Solving</u> :

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2 years ago
If b√2 = 6, what does b equal? I don't know why I'm stuck on this problem, but could somebody help me?
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Answer:

Step-by-step explanation:

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