Mathematics, 09.04.2021 02:40, xxkeyxx51
A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following results. T
oday 5 Years Ago Mean 82 88 Variance 112.5 54 Sample Size 45 36
The standard deviation of the difference between the means of the two populations is
A) 12.9
B) 9.3
C) 4
D) 2
Answers: 1
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The ratio of wooden bats to metal bats in the baseball coachβs bag is 2 to 1. if there are 20 wooden bats, how many metal bats are in the bag?
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Are triangles the congruent? write the congruency statement. what is the congruency that proves they are congruent? what is the perimeter of βpqr?
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Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.
Answers: 3
A statistics teacher wants to see if there is any difference in the abilities of students enrolled i...
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