Answer:
Step-by-step explanation:
Given that IQ mean is 100 and std dev = 12 for normal adults

Std error = 

i.e. sample size should be atleast 97
The required sample size is 97.
This is reasonable as this is greater than 30
Yes. This number of IQ test scores is a fairly large number.
They are both equal because the zeros don't count after the number 5.
Answer:
2=70 ,4=42, 6=75
Step-by-step explanation:
Subtract each number by 90 to find the missing complementary angle.
Answer: It is -62
Step-by-step explanation: It is -62 because if you find the absolute value it is always negetive .
Answer:
3/2
Step-by-step explanation: