Answer:
Mean = 910.2
Standard deviation = 12.8
Step-by-step explanation:
82% over the age of 25 are high school graduates.
A survey randomly selected students of certain country included 1110 who were over the age of 25 and 871 of them were high school.
n = 1110
p = 82% = 0.82
q = 1 - 0. 82
q = 0.18
Mean = np
= 1110*0.82
= 910.2
Standard deviation = √npq
= √ 1110*0.82*0.18
=√163.836
= 12.8
The percentage of boys in the class is 55%. This is because there are 20 people in the class, and 11/20= .55, or 55%
Radius is the half of diameter.
That means the radius is 2inch/2=1inch.
Good luck mate!
It is A because x is less than one and it is open since there is no like underneath the sign.
Answer:
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Step-by-step explanation:
