Solution : Here, the given information are
=82 , and =3.5
Use the standard normal formula
Z=(x-)/
Z* = x-
x=+Z*
For third quartile put Z=0.675
Third quartile Q3 had 75% data,
Q3 = + 0.675*
=82+0.675*3.5
Q3 = 84.3625
5) Scores on an English test are normally distributed with a mean of 82% and a...
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