Mathematics, 18.09.2019 22:20 calebhoover03
2. suppose a new standardized test is given to 100 randomly selected third-grade studentsin new jersey. the sample average scoreyon the test is 58 points and the sample standarddeviationsyis 8 points. a. the authors plan to administer the test to all third-grade students in new jersey. construct a 95% con dence interval for the mean score of all new jersey third graders. b. suppose the same test is given to 200 randomly selected third graders from iowa, pro-ducing a sample average of 62 points and sample standard deviation of 11 points. constructa 90% con dence interval for the di erence in mean scores between iowa and new jersey. c. can you conclude with a high degree of con dence that the population means for iowaand new jersey students are di erent? (what is the standard error of the di erence in thetwo sample means? what is thep-value of the test of no di erence in means versus somedi erence? )
Answers: 2
Mathematics, 21.06.2019 17:00
If f(x) = 2x - 6 and g(x) = 3x + 9, find (f - g)(x). a. (f-g)(x) = x + 15 o o b. (f- g)(x) = -x - 15 o c. (f- g)(x) = 5x + 3 o d. (f- g)(x) = -x+3 submit
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Mathematics, 21.06.2019 17:00
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Mathematics, 21.06.2019 17:30
Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250
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Mathematics, 22.06.2019 01:00
Miaβs gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay
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2. suppose a new standardized test is given to 100 randomly selected third-grade studentsin new jers...
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