Mathematics, 27.06.2020 23:01 random456
Your professor wants to determine if her students today are performing better in statistics than 10 years ago. End of semester grades from a random sample of students enrolled today and one of students enrolled 10 years ago have been obtained:
Today 10 Years Ago
82 88
σ 2 112.5 54
n 45 36
The test statistic for the difference between the two population means is .
a) –3
b) –1.5
c) –.65
d) –.47
Answers: 1
Mathematics, 21.06.2019 16:00, pringleosmond
65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.
Answers: 3
Mathematics, 21.06.2019 17:30, Lovergirl13
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Mathematics, 21.06.2019 18:50, bradenjesmt1028
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Mathematics, 21.06.2019 20:30, faizanaj1192
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