Bantuin dong dari no 31 sampe 40 . bagi yg pakar mtk

31. Nilai lebih dari 6 = 7, 8, 9
Jumlah siswa = 18 + 5 + 2 = 25 siswa
Jawaban : C

32. Data setelah diurutkan = 5, 6, 6, 6, 7, 7, 8, 9
Modus = 6
Median = 6,5
Jawaban : B

33. Data = 5, 5, 5, 6, 6, 6, 6, 7, 7, 8, 8, 8, 8, 9
Median = 6,5
Jawaban = B

34. Rata – rata = [(5 x 9) + (6 x 10) + (7 x 12) + (8 x 16) + (9 x 2) + (10 x 1)] / (9 + 10 + 12 + 16 + 2 +1)
= (45 + 60 + 84 + 128 + 18 + 10) / 50
= 345 / 50
= 6,9
Jawaban = A

35. Ruang Sample 3 koin = 8
Jawaban = B

36. Ruang Sample 2 dadu = 36
Jawaban = A

37. Paling sedikit 1 sisi angka = (AGA), (AGG), (GGA), (GAG), (AAG), (GAA), (AAA)
= 7/8
Jawaban = A

38. n(S) = 36
Berjumlah kurang dari 10 = 9,8,7,6,5,4,3,2
= (1,1)(1,2)(1,3)(1,4)(1,5)(1,6)(2,1)(2,2)(2,3)(2,4)(2,5)(2,6)(3,1)(3,2)(3,3)(3,4)(3,5)(3,6)(4,1)(4,2)(4,3)(4,4)(4,5)(5,1)(5,2)(5,3)(5,4)(6,1)(6,2)(6,3)
n(A) = 30
P(A) = 30/36 = 5/6
Jawaban = D

39. n(S) = 12
n(A) = (5A, 6A) = 2
P(A) = 2/12 = 1/6
Jawaban = B

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