Answer:
See below
Step-by-step explanation:
Given there are 56 M&M's:
- Expected Value of Blue = 56(0.24) = 13.44
- Expected Value of Brown = 56(0.14) = 7.84
- Expected Value of Green = 56(0.16) = 8.96
- Expected Value of Orange = 56(0.20) = 11.20
- Expected Value of Red = 56(0.13) = 7.28
- Expected Value of Yellow = 56(0.14) = 7.84
Remember to use
to calculate expected value! This will especially be helpful if you are conducting a chi-squared test of independence.
Answer:
a. Of all the students,
are girls with blond hair.
b. Of all the students,
are boys without brown hair.
Step-by-step explanation:
a. You know that
of the students are girls (This means that
of the studes are boys) and
of these girls have blond hair.
Then,
of
is:
Therefore, of all the students,
are girls with blond hair.
b. You know that
of the boys have brown hair.
Then,
of
is:
Of all the students,
are boys without brown hair.
Answer:
See below in bold,.
Step-by-step explanation:
There are 30-17 = 13 boys in the class.
a. Prob(First is a boy ) = 13/30 and Prob( second is a boy = 12/29).
As these 2 events are independent:
Prob( 2 boys being picked) = 13/30 * 12/29 = 26/145 or 0.179 to the nearest thousandth.
b. By a similar method to a:
Prob ( 2 girls being picked) = 17/30 * 16/29 = 136/435 = 0.313 to the nearest thousandth.
c. Prob (First student is a boy and second is a girl) = 13/30 * 17/29 = 221/870.
Prob ( first student is a girl and second is a boy) = 17/30 * 13/29 = 221/870
These 2 events are not independent so they are added:
Prob( one of the students is a boy) = 2 (221/870 = 221/435 = 0.508 to the nearest thousandth.
Answer:
I believe n equals 13.
Step-by-step explanation:
The answer is 503.39
Hope this helps