The scores on the GRE are normally distributed with a mean of 541 and a standard deviation of 89. Use the 68-95-99.7 rule to find the percentage of people taking the test who score between 363 and 541
3 answers
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for a mean of 541, with a sd of 89
we would have:
541-89 <---> 541+89 (one standard deviation)
452 <---> 630 ---------68%
452-89 <---> 630+89 (two standard deviations)
363 <---> 719 -------- 95%
since 541 is the mean
363<---> 541 would be 1/2 of 95% or 47.5%
we would have:
541-89 <---> 541+89 (one standard deviation)
452 <---> 630 ---------68%
452-89 <---> 630+89 (two standard deviations)
363 <---> 719 -------- 95%
since 541 is the mean
363<---> 541 would be 1/2 of 95% or 47.5%
Scores on the GRE (Graduate Record Examination) are normally distributed with a mean of 549 and a standard deviation of 138. Use the 68 dash 95 dash 99.7 Rule to find the percentage of people taking the test who score below 273.
1 answer