Z = (score-mean)/SD = (460-536)/76 = -76/76 = -1
Looking it up on a table in the back of your text, between mean and one SD below the mean = 34%
Scores on the GRE ( graduate record examination) are normally distributed with a mean of 536 and a standard deviation of 76. Use the 68-95-99.7. Rule to find the percentage of people taking the test who score between 460 and 536
The percentage of people taking the test whos scores between 460 and 536 is what percentage?
2 answers
460 is one s.d. below the mean of 536
this makes it half of the "68" ... so, 34%
this makes it half of the "68" ... so, 34%
2 answers