What is a possible number less than 3?
2 answers:
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we know that
Using the original score as the basis
If Misha increased her test score from % to
%
then
the increase variation is equal to
%-
%=
%
to find the approximate percent increase of Misha's test score we apply a rule of three
if %--------------> represents
%
%----------------->x
%
therefore
the answer is
the approximate percent increase of Misha's test score is %
Answer:
"0.0125" is the right solution.
Step-by-step explanation:
The given values are:
Random sample,
n = 90
Claims,
p = 20%
or,
= 0.20
By using normal approximation, we get
⇒
On substituting the values, we get
⇒
⇒
Now,
The standard deviation will be:
⇒
On putting the above given values, we get
⇒
⇒
⇒
⇒
hence,
By using the continuity correction or the z-table, we get
⇒
⇒
⇒
From table,
⇒