Answer:
50
Step-by-step explanation:
trust me bro
The answer for j box is 22 and for k boxs 15
The mean is the best measure to summarise the scores.
Answer: 756
Step-by-step explanation:
Given : The proportion of adults over 50 never graduated from high school. = 0.23
Margin of error : E=0.03
Significance level : 
Critical value : 
The formula to find the sample size is given by:_

i.e. 
Hence, the required minimum sample size = 756
I’m not sure search it on goggle lol