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 =
Answers: 1
Mathematics, 21.06.2019 13:50
Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.
Answers: 2
Mathematics, 21.06.2019 16:30
Which elements in the set below are integers? 12, –3⁄4,√ 25 , –7, √ 5 , 14⁄7, 9 a. 12, √ 25 , –7, 9 b. 12, √ 25 , –7, 14⁄7, 9 c. –3⁄4, 25 , √ 5 ,14⁄7 d. 12, –7, 9
Answers: 2
Mathematics, 21.06.2019 16:30
Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?
Answers: 1
Mathematics, 21.06.2019 17:00
Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?
Answers: 1
Suppose that jean studied for the graduate management admission test (gmat) using a well-known prepa...
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