Answer:
a)Both X and Y can be well approximated by normal random variables.
Step-by-step explanation:
For each individual, there are only two possible outcomes. Either they are right-handed, or they are left-handed. This means that we can solve this problem using concepts of the binomial probability distribution.
Binomial probability:
Probability of exactly x sucesses on n repeated trials, with probability p.
The binomial probability can be well approximated by normal random variables, using the expected value
and the standard deviation 
Let X be the number of males (out of the 100) who are left-handed.
and
. Can be well approximated.
Let Y be the number of females (out of the 80) who are left-handed.
and
. Can be well approximated.
The correct answer is
a)Both X and Y can be well approximated by normal random variables.
Answer:
(pq=x2+6x+8
Step-by-step explanation:
I think that's right ion know
Answer:
-1/2
Step-by-step explanation:
the slope of the first line is 2
to get the line perpendicular, you swap the numerator and denominator, then if positive make negative and the other way around
The temperature needs to fall 14 dregrees Fahrenheit to get to the original temperature 68 degrees Fahrenheit.
Answer:
0,0
Step-by-step explanation:
Use desmos for things like this. It is a math graphing calculator that my algebra teacher showed me.