An inlet pipe on a swimming pool can be used to fill the pool in 30 hours. The drain pipe can be used to empty the pool in 34 ho
1 answer:
You might be interested in
Answer:
The first student, with 20 measurements, will have the more precise interval due to the larger sample size.
Step-by-step explanation:
Margin of error of a confidence interval:
The margin of error of a confidence interval has the following format:
In which z is related to the confidence level, s to the standard deviation and n to the sample size.
The margin of error is inversely proportional to the square root of the sample size, which means that a larger sample will lead to a lower margin of error, that is, to a more precise interval.
In this question:
One student will use 5 measurements, other 20. The first student, with 20 measurements, will have the more precise interval due to the larger sample size.
The equation of the graph y= has no symmetry
The equation of the graph y =
Replace y with -y in the given equation
-y =
When replacing y with -y gives the different equation. The equation is not symmetric with respect to x axis
Replace x with -x in the given equation
y =
y =
When replacing x with -x gives the different equation. The equation is not symmetric with respect to y axis
Replace x with -x and y with -y in the equation
-y =
-y =
When replacing x with -x and y with -y gives the different equation. The equation is not symmetry with respect to origin.
Hence, the equation of the graph y= has no symmetry
Learn more about symmetry here
#SPJ1