Hypothesis Testing:

C. The entry corresponding to z= -1.34 is 0.0901 (this is the probability less), so, this shows most of students’ scores (90%) are higher than you. C Z= (48-60)/12=-1 . B. Look the table A, the entry corresponding to the z-score is 0.1587. A. Unstandardize the z-score. X= 60+12*5.2=122.4. 122.4 is much larger than the mean( =60). B. Range ... ................
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