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Ivenika [448]
3 years ago
7

Mr. Barnett’s test is normally distributed with a mean of 65 with a standard deviation of five points what is the probability th

at a randomly selected score is greater than 75 points

Mathematics
1 answer:
uranmaximum [27]3 years ago
4 0

Answer: 2.5%

Step-by-step explanation:

Mean score = 65

Standard deviation = 5

Score (x) = >75

Z-score = [(score - mean) ÷ standard deviation]

Z - score = [(75 - 65) ÷ 5]

Z - score = 10 ÷ 5 = 2

P(score higher than 75) = 100 - 95 = 5/2 = 2.5%

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Answer:

B

Step-by-step explanation:

To answer this, we need to see the to see to the fact that they are both in the same unit before we can take the ratio.

Firstly, we know that 1 foot = 12 inches. 9 feet would this be 9 * 12 = 108 inches.

Now we are told to get the ratio of length of car to length of model.

This means 108:6 = 18:1

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3 years ago
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Answer:

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Step-by-step explanation:

Sorry I'm probably too late since Quizziz doesn't wait unless you have the freeze timer thing.

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6 0
3 years ago
218 rounded to nearest 10
tangare [24]
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tia_tia [17]

Answer:

I only know the first one....

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3 years ago
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3 years ago
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