Answer:
#2
the answer is b
Step-by-step explanation:
Answer:
1.Amy should ask every 10th person leaving the school at the end of the day and Amy should ask the 50 students in her computer lab.
2.Yes,the sample is unbiased and equal to everyone.
3.200
Step-by-step explanation:
Answer:
Her z-score is 2.03.
Step-by-step explanation:
In a set with mean 
and standard deviation 
, the zscore of a measure X is given by:
Michelle’s height is 1.758 meters. What is her z-score?
Michelle's is a woman.
The average height of women is 
and the standard deviation is 
This is Z when X = 1.758. So
Her z-score is 2.03.
You are correct
12.2^2 x 3.14 x 6.1 = 2850.9
