Answer:
Option (B) is the correct answer to the following question.
Step-by-step explanation:
Step-1: We have to find the Mean of the series.
The series is Given in the question 62 61 61 57 61 54 59 58 59 69 60 67.

Step-2: We have to find the Standard Deviation.
Let Standard Deviation be x.
Formula of Standard Deviation is: 
Put value in formula of Standard Deviation,
= 40.75
Step-3: Then, we have to find the critical value by chi-square.


Then, find the confidence interval which is 95%.


Correct me if im wrong but the answer is (B) hope this helps!
Answer:
f^-1 (x) = x/5
Step-by-step explanation:
f(x) = 5x
Replace f(x) with y
y= 5x
Exchange x and y
x = 5y
Solve for y
Divide each side by 5
x/5 = 5y/5
x/5 = y
The inverse is x/5
Divide 25 by two and which is 12.5 then multiply that by 5 and you get you’re answer
Answer:
Division Property of Equality
Step-by-step explanation:
Divide both sides by 5
So answer : Division Property of Equality