Answer:
In an experimental study looking at classical music exposure and reading ability in children, the researcher divided the children into two groups (Groups A and B
Approximately 61.
if you divide 420 by 6.82 you get 61.58 :)
You cant because there are 2 different variables
hope this helps, have a great day
Answer: 0.0136
Step-by-step explanation:
Given : Mean : 
Standard deviation : 
Sample size : 
The formula to calculate the z-score :-

For x = 24

The p-value = 
Hence, the probability that the sample mean age for 50 randomly selected women to marry is at most 24 years = 0.0136