Question

Find the value of p; if: 14:p=7:9​

Answer 1

Step-by-step explanation:

x 3 5 7 9 11 13

f 6 8 15 p 8 4 41+p

f*x 18 40 105 9p 88 52 303+9p

mean of distribution is given by formula,

mean=

∑f

∑x∗f

7.5=

41+p

303+9p

7.5(41+p)=303+9p

307.5−303=9p−7.5p

4.5=1.5p

p=3

Thus option C