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frez [133]
3 years ago
11

A class of 30 introductory statistics students took a quiz worth 100 points. the standard deviation of the scores was 0. what mu

st be true about the students' scores?
Mathematics
2 answers:
bearhunter [10]3 years ago
8 0
This means that everybody answered the same number of items. This means that every data value is equal to the mean. This outcome permits us to say that the sample standard deviation of a data set is zero if and only if all of its values are same or identical.
Sloan [31]3 years ago
4 0

The answer is that all the scores are the same

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gladu [14]
Point A is exactly in the middle...it is halfway between 0 and 1...so it is 1/2 or 0.5
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3 years ago
A line passes through the point -10,9 and has a slope of 1/2. Write an equation in slope-intercept form for this line
vitfil [10]

Answer:

Step-by-step explanation:

The slope intercept form of an equation of a line is y = mx + b, where m is the slope and b is the y-intercept (the value of y when x=0).

Since the slope is (1/2), we can write:

y = (1/2)x + b

We want a value of b such that it forces the line to go through point (-10,9).  Enter that point in the equation and solve for b:

y = (1/2)x + b

9 = (1/2)*(-10) + b

9 = -5 + b

b = 14

The eqyuation of a line with a slope of (1/2) and goes through point (-10,9) is:

y = (1/2)x + 14

See attachment.

7 0
3 years ago
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Inessa05 [86]
I think it would take about 1 hour and 17 minutes
6 0
3 years ago
Triangle END is reflected across the line y = x using the rule (x, y) → (y, x) to create triangle E′N′D′. If a line segment is d
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the correct answer is that they are perpendicular.

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Read 2 more answers
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vodomira [7]

Answer:

C) y is equal to 10.5x

Step-by-step explanation:

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this is because x is equal to the number of hours they babysit. we do not know the actual so it is replaced with x

and y is equal to the sum of 10.5x because we multiply the number of hours worked, and the amount per hour.

7 0
3 years ago
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