Evaluate the following function for f(4).
1 answer:
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Mean of data = sum of values ÷ number of data
We have three values; 84, 87, and
Sum of values =
= 
We want the value of to give mean between 85 and 90 inclusive
Hence, the value of is between 84 and 99 inclusive
We have three values; 84, 87, and
Sum of values =
We want the value of
Hence, the value of
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,
⇒