Answer:
.b. It is one‐half as large as when n = 100.
Step-by-step explanation:
Given that a simple random sample of 100 batteries is selected from a process that produces batteries with a mean lifetime of 32 hours and a standard deviation of 3 hours.
i.e. s = 0.3
we obtain se of sample by dividing std devitation by the square root of sample size
i.e. s= 
when n =100 this = 0.3 and
when n =400 this equals 0.15
We find that when sample size is four times as large as original, std deviation becomes 1/2 of the original
Correction option is
.b. It is one‐half as large as when n = 100.
Answer:
3x
Step-by-step explanation:
2x+x = 3x
9/11 is rounded to 1. It rounds up because 9 is higher than 5, which is the middle of 11.
The answer is probably 2 because if you plug in the numbers you would get
3x-4=-12 divided by -6 = +2.
Answer:
c.
Step-by-step explanation:
AB=√(5²+8²)=√(25+64)=√89
