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IceJOKER [234]
3 years ago
14

In all, 1000 students took a statistics exam worth 150 points. The first quartile (or Q1) for all 1000 scores is 90 points. Abou

t how many students had scores greater than 90 points?
Mathematics
2 answers:
nasty-shy [4]3 years ago
5 0

Answer:

i think 750

Step-by-step explanation:

Brums [2.3K]3 years ago
4 0

Answer:

The number of students who scored more than 90 points is 750.

Step-by-step explanation:

Quartiles are statistical measures that the divide the data into four groups.

The first quartile (Q₁) indicates that 25% of the observation are less than or equal to Q₁.

The second quartile (Q₂) indicates that 50% of the observation are less than or equal to Q₂.

The third quartile (Q₃) indicates that 75% of the observation are less than or equal to Q₃.

It is provided that the first quartile is at 90 points.

That is, P (X ≤ 90) = 0.25.

The probability that a student scores more than 90 points is:

P (X > 90) = 1 - P (X ≤ 90)

                = 1 - 0.25

                = 0.75

The number of students who scored more than 90 points is: 1000 × 0.75 = 750.

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Answer:

Point A is the center of the circle that passes through points E, F, and G and the center of the circle that passes through points X, Y, and Z.

Step-by-step explanation:

A is the intersection of angle bisectors, so is the incenter of triangle EFG. It is also the intersection of the perpendicular bisectors of the sides of triangle EFG, so is the circumcenter.

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The mean number of people per day visiting a museum in July was 160. If 20 more people each day visited the museum in August, wh
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Which equation could represent a circle with a center located at (11,-5)
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3 years ago
Answers for both boxes please :)​
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Answer: (-2;8)

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Step-by-step explanation:

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3 years ago
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