## moazzam07 one year ago Winnie used a probability simulator to roll a 6-sided number cube and flip a coin 100 times. The results are shown in the tables below:

1. anonymous

tables?

2. moazzam07

3. moazzam07

Using Winnie's simulation, what is the probability of rolling a 4 on the number cube and the coin landing heads up? 16 over 100 72 over 100 1232 over 10000 2432 over 10000

4. anonymous

what is the probability of rolling a 4 according to the table?

5. anonymous

28/100

6. moazzam07

ok

7. anonymous

the probability of landing heads up is 44/100

8. anonymous

so do 28 over 100 times 44 over 100

9. moazzam07

let me do it

10. anonymous

okay :)

11. anonymous

I'll tell you if it is right

12. moazzam07

13. anonymous

do you know how to multiply fractions?

14. moazzam07

77/627

15. moazzam07

625

16. anonymous

|dw:1438366467234:dw|

17. anonymous

44*28 is 1,232

18. anonymous

and 100*100 is 10,000

19. anonymous

did you use a fraction calc?

20. anonymous

just wondering...

21. moazzam07

yes :(

22. anonymous

I'll show you how to multiply fractions

23. moazzam07

I know how but i dont have paper on me

24. moazzam07

Give me a problem and ill answer it

25. anonymous

$\frac{ 28 }{ 100 } \times \frac{ 44 }{ 100 } = \frac{ 1,232 }{ 10,000 }$

26. anonymous

since 28*44 is 1232 and 100*100 is 10,000

27. anonymous

okay

28. moazzam07

ok

29. anonymous

do

30. moazzam07

do what?

31. anonymous

$\frac{ 3 }{ 4 }\times \frac{ 1 }{ 2 }$

32. anonymous

do 3*1 across and 4*2 on the bottom

33. moazzam07

1 and 1/4

34. moazzam07

35. anonymous

no

36. anonymous

don't worry

37. moazzam07

3/8?

38. anonymous

|dw:1438366891504:dw|

39. anonymous

yes 3/8

40. anonymous

Do you want to try another one?

41. moazzam07

yes

42. anonymous

$\frac{ 5 }{ 8}\times \frac{ 1 }{ 2}$

43. moazzam07

5/16

44. anonymous

correct :)

45. anonymous

do you get how to multiply fractions now?

46. moazzam07

Yes but i still dont know the answer to this question i just asked

47. anonymous

do you know how to find the probability of one event

48. moazzam07

yea

49. anonymous

example: Lucy had 10 blue shoes. 4 were pink and 6 were blue. What is the probability of getting a pink shoe?

50. moazzam07

6/20

51. anonymous

4/10

52. anonymous

sorry, not including the pairs of shoes

53. anonymous

just shoes by itself

54. anonymous

55. moazzam07

Oh

56. anonymous

let's try another example

57. moazzam07

58. anonymous

I had 7 blueberries and 14 apples. What is the probability of getting an apple?

59. moazzam07

14/21

60. anonymous

ignore the other example

61. moazzam07

ok

62. anonymous

correct

63. anonymous

okay so what is the probability of getting heads up from your table

64. moazzam07

18/32?

65. anonymous

no

66. anonymous

how many times was the coin flipped?

67. moazzam07

Oh yeah wait

68. moazzam07

18/50

69. anonymous

no, it was flipped 100 times

70. anonymous

how many times did it land on heads?

71. moazzam07

Oh yeah i was looking at the wrong question

72. anonymous

lol

73. moazzam07

44/100

74. anonymous

yes

75. anonymous

now what is the probability of getting a 4 on the dice cube

76. moazzam07

1/6

77. anonymous

according to the table

78. moazzam07

28/100

79. anonymous

yes

80. anonymous

to combine the probability of two events, multiply the probability of each event happening

81. moazzam07

1232/10000

82. anonymous

in this case, $\frac{ 44 }{ 100 }\times \frac{ 28 }{ 100 }$

83. anonymous

yes, that is correct

84. moazzam07

yay

85. anonymous

YAY

86. anonymous

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