math Study guide 3

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal.
P(not red) = ?
red | blue | green | yellow
-----------------------------------------
20 | 10 | 9 | 11
(1 point)
a 0.6
b 0.4
c 0.2 <------------------------
d 0.3

2. You roll a number cube 20 times. The number 4 is rolled 8 times. What is the experimental probability of rolling a 4? (1 point)

a 40%
b 25%
c 20%
d 17% <-------------------------

3. The table below shows the results of flipping two coins. How does the experimental probability of getting at least one tails compare to the
theoretical probability of getting at least one?
outcome|HH | TH | HT | TT
--------------------------
landed |28 |22 |34 | 16

A The experimental probability is 3% greater than the theoretical probability.

B The theoretical probability is 3% greater than the experimental probability. <---------------

C The experimental probability is equal to the theoretical probability.

D The experimental probability is about 1% less than the theoretical probability.

4. The probability of winning a game is 15%. If you play 20 times, how many times should you expect to win? (1 point)
a 5 times <------------------------
b 3 times
c 6 times
d 15 times

5. The probability of having a winning raffle ticket is 20%. If you bought 50 tickets, how many winning tickets should you expect to have?

a 5 tickets <----------------------
b 3 tickets
c 8 tickets
d 10 tickets

6. A company finds 5 defective toys in a sample of 600. Predict how many defective toys are in a shipment of 24,000.

a 40 toys <-------------------------
b 166 toys
c 200 toys
d 20 toys

7. Which of the following is an example of independent events?

A rolling two number cubes <-------------------

B selecting marbles from a bag without
replacement after each draw

C choosing and eating a piece of candy from a dish and then choosing another piece of candy

D Pulling a card from a deck when other players have already pulled several cards from that deck

8. A bag of fruit contains 4 apples, 1 plum, 2 apricots, and 3 oranges. Pieces of fruit are drawn twice with replacement. What is P(apple, then
apricot)? (1 point)

a 4/5
b 2/25
c 3/25
d 3/5 <---------------------

9. A coin is flipped three times. How the does P(H, H, H) compare to P(H, T, H)? (1 point)

A. P(H, H, H) is greater than P(H, T, H)
B.P(H, T, H) is greater than P(H, H, H). <-----------------
c.The probabilities are the same.
d.There is no way to tell with the information given.

10. A coin is tossed and a number cube is rolled. What is P(heads, a number less than 5)? (1 point)

A 1/3
B 5/12
C 2/3
D 5/6 <----------------------

am i correct.
Just to let you know, i am really bad at math:(

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  3. 👁 3,053
  1. Please explain how you got your choices.

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    posted by MathMate
  2. 1)20% chance of spinning each one
    2)= 40 40% *20=8
    3)since there are 4 outcomes, theoretical = 25% my changed answer is 25%.28+22+34+16= 100 100 / 4 = 25%
    4)my changed answer 3 15% of 20=3
    5)20=2 50=5 2*5=10 A
    6)24000 / 600 = 40
    7)self explanatory
    8)apple+apricot =6 10 all together 6/10=3/5
    9)since a coin flip is random,it is a higher probability of the outcome to be H T H or B
    10)since it says less than 5 and there is 6 sides on a dice all together, it is 5/6.

    PLEASE CHECK

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  3. 1)
    There are 4 colours, multiplied by 20% gives only 80%, where do the remaining 20% go?
    Experimental probability goes with the outcome of experiments. Think along those lines.

    2)
    40% is correct, as you said 40%*20=8, or working directly, 8÷20=40%.

    3)
    Theoretical is 25% (100/4).
    Experimental is what? Then choose a correct answer.

    4)
    15% of 20 = 3 times
    is correct.

    5)
    Correct, calculate by proportion,
    or 50 tickets * 20% = 10 .

    6)
    Remember they found 5 defective toys out of 600.

    7)
    Independent means one outcome does not affect the other.
    If you think it is self-explanatory, it seems that you understand the idea.

    8)
    What you 3/5 is the correct answer for a different problem, namely picking either an apple or an apricot.

    The question requires picking an apple first, then an apricot on the second draw.

    The two draws are independent steps.

    The probability of succeeding both steps is the product of succeeding each step.
    There is a total of 10 fruit pieces.
    P(Apple)=4/10
    P(Apricot)=2/10
    So P(Apple then Apricot)
    = P(Apple)*P(Apricot)
    =?

    9)
    There are 2 outcomes for each flip, and there are 2³=8 outcomes if it's flipped three times.
    Enumerate the 8 outcomes and count how many of them are HTH, and how many of them are HHH.
    (Ignore my previous answer to this problem, I misinterpreted the problem)

    10)
    Again, this is a two step experiment, tossing a coin and throwing a die.
    Find and post the probability of success for each step. Now since the two steps are independent, the probabilities of the two steps may be multiplied together to get the final probability.

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    posted by MathMate
  4. wait so what are the answers to all of them DragonBornFU5R0D48

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  5. cant you just put the answers

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  6. 1. a
    2. a
    3. b
    4. b
    5. c
    6. c
    7. a
    8. b
    9. c
    10. a

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    posted by lun
  7. lun is correct just took the quiz and got 100

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  8. thank you so muchhhhhhhhhh

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  9. Thank you so much I got 100%

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    posted by Corbin
  10. THNX lun!!! everyone lun is correct srsly did the test and got 100 percent!!! thank you soooooo much!

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    posted by TURTLES
  11. Thanks lun!!!

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    posted by person
  12. I thought lun was incorrect cuz of the choices "AA BB CC ABC A" but it was right. Thank you so much!

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  13. thank u everyone

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  14. 6 is b

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    posted by JJ
  15. Thx lun is correct

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    posted by Notknown
  16. 6 is actually C for connexus, but other than that, Lun is correct!!

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  17. Lun is correct

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  18. Lesson 5: Probability of Independent Events
    Essential Math 6 B Unit 6:Exploring Probability
    1- is 1 which is a
    2- is 1 which is a
    3- is 2 which is b
    4- is 2 which is b
    5- is 3 which is c
    6- is 2 which is b
    7- is 1 which is a
    8- is 2 which is b
    9- is 3 which is c
    10- is 1 which is a
    DONE AT 8:17 PM
    Date 5/16/2018

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  19. i got a 90 percent Ty but for number 5 the answer is actually D for connexus student. i repeat for connexus students only.

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    posted by lele
  20. yay

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  21. 6 is actually b not c, and 2 is d, not a. (connexus grade 6)

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    posted by katie
  22. ALL THE CORRECT ANSWERS FOR LESSON 5 UNIT 6 (connexus):

    A
    D
    B
    C
    B
    A
    B
    C
    A

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    posted by katie
  23. Nein!

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    posted by Nein
  24. Thanks Iun!

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    posted by Corbyn
  25. For Connections Academy the answers are:
    1. A
    2. A
    3. B
    4. B
    5. C
    6. C
    7. A
    8. B
    9. C
    10. A
    10/10 (100%)
    Your Welcome!

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  26. 6 is B i just took the test and lun is wrong with 6 but everything else is correct!!!!!! :)

  27. THX LUN!!!!!!!!!!

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    posted by Kacy
  28. i got a 90%, number 6 has now been changed to b?

    6. A dealership has 5 red cars out of 20 cars. Based on his ratio, predict how many red cars the dealership would have if they had 100 cars.
    Unselected answer (0 pts) 4 red cars
    Unselected Correct answer (1 pt) 25 red cars
    Incorrect Selected Answer (0 pts) 400 red cars
    Unselected answer (0 pts) 75 red cars
    0 /1 point

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    posted by Tyler
  29. LUN IS CORRECT FOR 6TH GRADE CONNEXUS I GOT 💯%

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    posted by Ms. Pue
  30. THANK YOU SO MUCH! I was Falling behind in math I had a C+ My mom said I have t get All A's and B's I'm almost getting it into a b- "I think" LOL Thanks guys!

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  31. This is for the same questions diffrent awnsers 6b lesson 3 unit 6
    1c
    2c
    3a
    4b
    5a

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    posted by Ca
  32. I need the answers to lesson 3 unit 6. Dose anyone know the answers?

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  33. read name and read bottom sentce with it

    skin wish i had it

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    posted by Galaxy
  34. thanks 6 is 25!

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  35. Actually C is correct for 6

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  36. 5 AND 6 ARE BOTH C

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    posted by ronin
  37. thanks lun

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    posted by Tfue
  38. Lun is correct :)
    ty Lun x3

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  39. Lun is right thank god i was so frickin scared

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    posted by Thx Lun
  40. Ty lun

  41. wat about the pratice tho

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  42. 6 is c

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    posted by Alex
  43. Ca is correct if you're doing lesson 3 unit 6

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    posted by Luna
  44. lun ur an absolute lengend!!!

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  45. thank you gys

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    posted by SASKUE

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