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AnnyKZ [126]
2 years ago
10

A club has members from three grades.

Mathematics
1 answer:
mars1129 [50]2 years ago
7 0

the ratio is 24:30

or the simplified version is 4:5

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A college statistics class at a nearby university has 1,000 students enrolled in it. On a recent exam, the mean score was 75% wi
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Answer:

38.11%

Step-by-step explanation:

Given that:

Mean (μ) = 75, standard deviation (σ) = 5

Z score is a measure in statistics to determine the variation of a raw score from the mean. It is given by the equation:

z=\frac{x-\mu}{\sigma}

To calculate the percentage of students scored between a 73 and 78 (C grade), we need to find the z score for 73 and then for 78.

For x = 73, the z score is:

z=\frac{x-\mu}{\sigma}=\frac{73-75}{5} =-0.4

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z=\frac{x-\mu}{\sigma}=\frac{78-75}{5} =0.6

From the probability distribution table:

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3 years ago
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Sonja [21]

Answer:

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Step-by-step explanation:

+y(–1.5) = -1.5y

This is how distribution works

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