Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-

Given : 

n=23, which is a small sample(n<30), so we use t-test.
Significance level: 
Critical value : 
Then , the confidence interval for population mean will be :-

Hence, the 95% confidence interval for the population mean is 
Answer:
98 inches
Step-by-step explanation:
30 millimeters is 1.18 inches, multiply it by 83 to get 2500 millimeters, Then you get 98
Answer:
Sun-Li will be able to ride 12 rides. (30-5)/2=24
Step-by-step explanation:
Are you asking to simplify all of those equations?
Answer:
The correct choice is D
Step-by-step explanation:
Value of X=20 and then to know the value of y we need to add
52+52= 104
360-104= 256
256÷2= 128
Y=128