4.The College Boards, which are administered each year to many thousands of high
school students, are scored so as to yield a mean of 500 and standard deviation of 100.
These scores are close to be normally distributed.
a. What percentage of the scores can be expected ...
... to satisfy the condition of being between 450 and 600.
(450-500)/100 =-.5 (600-500)/100 =1
.3085 .8413
.8413-.3085 = .5328
1 answer
Right, but to get percentage, you need to multiply by 100.
1 answer