Exercise 17.1 General Section 1 a) If $\sum fx$ = 450 and N = 15, find $\overline{X}$. Solution: We know, $\overline{X} = \dfrac{ \sumfx}{N}$ $= \dfrac{450}{15}$ $= 30$ 2 a) If $\overline{X}$ = 35 and $\sum fx$ = 455, find t…