Answer:
See it in the pic.
Step-by-step explanation:
See it in the pic.
Answer:
Rational.
Step-by-step explanation:
1.666... can be expressed as
.
Hence it is rational.
Answer:

Step-by-step explanation:
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
The population proportion have the following distribution
And we can solve the problem using the z score on this case given by:

We are interested on this probability:

And we can use the z score formula, and we got this:


And we can find this probability like this:

Answer:
60
Step-by-step explanation:
Im too lazy
180-117=63
3y+12+63+4y=180
7y+75=180
7y=105
y=15
4(15)=60
Can i get brainliest?
Answer:
The first one is correct.
Step-by-step explanation:
-3.5 is inside of the shaded area of the line.
I hope this helps.