Step-by-step explanation:
b2 =5
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Answer:
OPTION 2 IS THE CORRECT ANSWER
Step-by-step explanation:
ITS SIMPLE HOPE U GET IT
Answer: C. 12.5
Step-by-step explanation:
Given : A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours.
Population mean : 
Sample size : n= 100
Sample mean : 
Standard deviation: 
The value of test-statistic is given by :-

Hence, the value of the test statistic for this problem is 12.5.
This is volume of a sphere.