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sethfont16

Guest

Probability please help

PLEASE HELP I GOT SOME WRONG

#1. Flip a coin 10 times and
record the outcomes here.

p(h)= 7/10
p(t)= 3/10

#2. Start again. Flip the coin
50 times and keep track of the
outcomes. Record them here.

p(h)= 25/50
p(t)= 25/50

#3. Verify that the sum of the
experimental probabilities of
flipping heads or tails add up
to 1. Check both sets of your
data. Show your work.

7/10 + 3/10 = 10/10 which
equals to 1.

#4. Did you notice that your
experimental data from
question 2 was closer to the
theoretical probability than
your data from question 1?
Explain briefly using your
data to support your answer.

number 2 was closer to the
theoretical proabaility
because I flipped the coin
more times than in number 1.

#5. Predict the experimental
probabilities of flipping
heads or tails if you flipped
the coin a total of 100 times.
Use information from the
lesson as well as your
experimental data to support
your answer.

It would be closer to the
theoretical probability
because of the amount of times
the coin was flipped.

#6. What is the theoretical
probability of rolling a "4"
on a regular six-sided die?

1/6

#7. Describe the appearance of
a histogram that shows the
theoretical probabilities of
rolling the numbers 1-6 on a
regular six-sided die.

7

#8. How many sixes did she
roll?

7

#9. What is P(2)?

p(2)= 4/25

#10. What is P(4)?

p(4)= 5/25

#11. What is the probability
that she rolled a 2 or a 3?

5/25

#12. What is the experimental
probability of rolling an even
number, according to Rita's
data?

3/25

#13. What is the theoretical
probability of rolling an even
number?
3, 3 out of 25.

#14. Find the experimental
probability P(1, 2, 3, 4, 5 or
6).

p(1)= 6/25
p(2)= 4/25
p(3)= 1/25
p(4)= 5/25
P(5)= 2/25
p(6)= 3/25

#15. Find the theoretical
probability P(1, 2, 3, 4, 5,
or 6).
#16. What is P(red, yellow,
blue)?
p(red)= 4/16
p(yellow)= 1/16
p(blue)= 1/16

so the answer to #16 is 6/16.

#17. What is P(orange, yellow)?
orange= 1/16
yellow= 1/16
so the answer to #17 is 2/16.

#18. P(green, blue, purple)?

10/16

#19. P(pink)?

0, because there is no pink.

#20. P(red, orange, yellow,
green, blue, purple)?

16

PLEASE HELP

You have not included the histograms that are you are asked to include.

#3 - Incomplete

#7 - Incorrect

#10 - Not reduced

#11 - Not reduced

#12 - Incorrect

#13 - Incorrect

#14 - You are asked for P(1, 2, 3, 4, 5, or 6), not P(1), P(2), etc.

#15 - Not answered.

#16 - Not reduced

#17 - Not reduced

#18 - Not reduced

#20 - Incorrect

Bob

Administrator

Registered: 2010-06-20

Posts: 10,143

Re: Probability please help

hi sethfont16

Welcome to the forum. 

'Not reduced' means you should cancel the fraction down.

eg.  If you gave an answer as 20/25, your tutor wants you to reduce this to 4/5.

You haven't given the data for the later questions.  How did you think we could help without that ?

I suggest you post back the data for the ones you got wrong and we can help with those.

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob