#please dijawab bagi yg mah jawab

38. Tb + P [b1/b1+b2]
Tb = 59.5
P = 10
B1 = 15-13 = 2
B2 = 15-12 = 3

Penyelesaian
= 59.5 + 10 [2/2+3]
= 59.5 + 10 x 0.4
= 59.5 + 4
= 63.5 kg (D)

39. x(bar) = 3+4+5+5+6+7 / 6 = 5
Tabel :
| Xi | Xi - X(bar) | |Xi - X(bar)| |
| 3 | 3 - 5 | 2 |
| 4 | 4 - 5 | 1 |
| 5 | 5 - 5 | 0 |
| 5 | 5 - 5 | 0 |
| 6 | 6 - 5 | 1 |
| 7 | 7 - 5 | 2 |
JUMLAH = 6
Sr = 1/6 (6) = 6/6 atau Sr = 1 (C)



#CorrectMeIfImWrong. Maaf kalau ada yang ga tepat/salah. Dan tabelnya juga berantakan.