Last week Sarah had exams Math and Spanish, she had a score of 45 on the Math ex
ID: 3171270 • Letter: L
Question
Last week Sarah had exams Math and Spanish, she had a score of 45 on the Math exa nd a score of 65 on the Spanish exam. For which class should Sara expect the better grade? The grades should be the same because the two exam scores are in the same location. Spanish There is not enough information to determine which is the better grade. Math In a population with a 8, a score of x 42 corresponds to a z of z 50. What is the population -score In a distribution with H 80, a score of X 90 corresponds to 2 2.00. The standard deviation for this population is -5. False two individual in a population have identical Xscores, they also will have identical z-scores. False Last week Sarah had exams in Math and in Spanish. On the Math exam, the mean was u 330 with a 35, and Sarah had a score of x 45. Onthe Spanish exam, the mean was 60 with 6 and Sarah had a score of 65. For which cass should Sara expect the better grade? There is not enough information to determine which isthe better grade. The grades should be the same because the two exa scores are in the same location. Spanish Math suppose you earned a score of X 54 on an exam. which set of parameters would give youthe highest grade? u 58 a 2 50 and o 8 u 50 and a 2 H 58 and a 8 hypothesis tests, standard error measures variability among population me the size of the critical region the amount of difference between the sample mean and the population mean that is reasonable to expect just by chance the size of the treatment effect Ina hypothesis test, a z-score value near zeroExplanation / Answer
1. C is the right answer. there isn't enoughg infomation to determine which is a better grade.
To compare we must have mean and standard deviation ( i.e. must know distributions) to know which subjected she has scored better
2. Sigma = 8
X=42
Z=-.5
Population mean =Mu=?
(42-Mu)/8 = -.5
Mu = 46
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