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:
15+2a
Step-by-step explanation:
7+a+8+a=15+2a
Answer:
7, I believe. I have to fill in the extra character space, so I hope you have a nice day :)
Answer:
The solutions are −5 and 1 .
133.857142857 I’m not completely sure