Mathematics, 22.11.2019 23:31 MyaMya12
Suppose that jean studied for the graduate management admission test (gmat) using a well-known preparation class and was thrilled to receive a total score of 740. her friend eric, however, thinks she would have scored just as well without the class. to test the efficacy of the class, they obtain a small but random sample of 17 test results from other students using the same class. this sample's average is 559.42 with a standard deviation of 108.03. in comparison, the national average was 550.12. assume the population's results are normally distributed but that its standard deviation is not known. jean and eric decide to perform a two-tailed t‑test at a significance level of α = 0.05. how many degrees of freedom should they use in their calculations? df =
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Mathematics, 21.06.2019 21:30
Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.
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Mathematics, 21.06.2019 23:00
An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?
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Mathematics, 21.06.2019 23:00
Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.
Answers: 1
Suppose that jean studied for the graduate management admission test (gmat) using a well-known prepa...
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