Jonah58

08.09.2019 • 

Mathematics

We are interested in studying the performance of college students on statistics exams. in any
given semester, there are hundreds of students taking statistics in the department of psychology,
mathematics, business, or other related departments that offer a course on statistics. we
randomly select 20 students from the roster of all students enrolled in statistics for the spring
semester and administer questionnaires throughout the semester, as well as collect their
assignment and exam grades. in our first analysis, we are interested in examining the grades
from all the students on exam 1 in their course. all exams were out of 100 points. this data is
below:
90 75 67 56 89 88 34 67 95 81
76 69 72 73 79 83 42 53 78 80
1. draw a frequency distribution of the data. what can you determine from this
distribution?

Ответ:

jordonlewis

09.10.2021

Mathematics

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I got 75 as an answer.

There are 180 degrees in a triangle. We know two of the angles.

80 degrees and (a-5) degrees

And we’re given 2a on a line. We know that two angles on a line are supplementary meaning they add up to 180 degrees.

So the other angle in the triangle is (180 - 2a). Now we just have to add up all three angles and set them equal to 180 to find a.

You should get a = 75.

Let me know if you have any questions!

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