Step-by-step explanation:




The answer is B,which is 454 to be exact
Answer:
Mean is 83.7%
And, the standard deviation is 0.033
Step-by-step explanation:
The computation of the mean and the standard deviation is as follows:
Let us assume the P be the sample proportion
Mean is 83.7%
And, the standard deviation is

= 0.033
Answer:
I believe the quiz had 18 questions, with a 14:4 ratio
Answer:14
Step-by-step explanation:
He takes 2 a week so 2 times 7 is 14