smokemicpot
30.01.2020 •
Mathematics
Will give !
a researcher wanted to compare the final test scores of students who used two different types of study materials. the researcher randomly selected two samples of 20 students using each type of material and determined the final test score of each student. the table shows the mean final score and the mean absolute deviation (mad) for each sample.
the researcher can/cannot conclude that material 1 leads to higher final test scores because the distributions of the scores in the two samples are identical/somewhat similar/ similar/ different.
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Ответ:
The researcher CAN
The two samples are DIFFERENT
Ответ:
The researcher
can
conclude that Material 1 leads to higher final test scores because the distributions of the scores in the two samples are
different
.
Step-by-step explanation:
Ответ:
y = 148°
Step-by-step explanation:
4x - 18 = 2x + 12 (alternate exterior angles are congruent)
Collect like terms
4x - 18 = 2x + 12
4x - 2x = 18 + 12
2x = 20
Divide both sides by 2
x = 10
y = 180 - (2x + 12) (linear pair theorem)
Plug in the value of x
y = 180 - (2(10) + 12)
y = 180 - (20 + 12)
y = 148°