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Andrej [43]
3 years ago
11

In a class of students, the following data table summarizes how many students play an instrument or a sport. What is the probabi

lity that a student plays a sport given that they play an instrument?

Mathematics
1 answer:
hjlf3 years ago
3 0

8 students out of 27

the total of students is 27 out of the 27 students 19 dont play and instrument and a sport

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A sample of 56 research cotton samples resulted in a sample average percentage elongation of 8.17 and a sample standard deviatio
Step2247 [10]

Answer:

(7.7981, 8.5419). The distribution of percentage elongation can be any distribution with finite mean and variance.

Step-by-step explanation:

We have a large sample size n = 56 research cotton samples. Besides, \bar{x} = 8.17 and s = 1.42. A 95% large-sample CI for the true average percentage elongation is given by \bar{x}\pm z_{0.05/2}(s/\sqrt{n}), i.e., 8.17\pm (1.96)(1.42/\sqrt{56}) or equivalently (7.7981, 8.5419). The distribution of percentage elongation can be any distribution with finite mean and variance because we have a large sample.

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Area of square = 9 mm2<br> Perimeter of square=
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Answer:

the perimeter of the square is 12 mm

Step-by-step explanation:

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8 0
3 years ago
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Which of the following reasons could be used to conclude that the lines are parallel based on the given information?
rewona [7]

We have been given three statements. From those statements, we have to pick the statement that can conclude that that two lines are parallel.


Statement 1:

If right angles are formed, then lines are parallel.

This is not valid because if the angle formed is right angle then lines forming right angle will be perpendicular.


Statement 2:

If two lines are perpendicular to another line, then they are parallel.

This is valid because the line on which other two lines are perpendicular will work as transversal and the alternet interior angles will be equal. Hence the two perpendicular lines on given line will be parallel to each other.


Statement 3:

If alternate interior angles are equal, then lines are parallel.

This is valid as explained above.


Hence final answer are statement 2 and statement 3 both.


7 0
3 years ago
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Given: (↔AB) ║ (↔CD)
nordsb [41]
1) m = y2 - y1/x2 - x1
y = mx + b
m = 7 - 0/3 - 8
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Help and fast i'm on the quiz Which two points on the number line represent numbers that can be combined to make zero??
hoa [83]

Answer:

B and D

Step-by-step explanation:

-2 + 2 = 0

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2 years ago
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