find the value of p for the above distribution whose mean is 16.6
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Answer: p = 18
Step-by-step explanation:
Sigma FiXi = 12*8 + 16*12 + 20*15 + 24*p + 16*20 + 25*8 + 30*4 = 1228+24p
Sigma Fi = 12 + 16 +20+24+ 16+8+4 = 100
Mean = 16.6
⇒ [(1228+24p)/100] = 16.6
⇒ 1228+24p = 1660
⇒24p = 1660-1228
⇒24p = 432
⇒p=432/24
⇒p = 18
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