Following is the probability distribution of smart phones sold in a shop per day Then $E(x)=$

Following is the probability distribution of smart phones sold in a shop per day Then $E(x)=$
  1. $2.45$
  2. $2.55$
  3. $0.55$
  4. $0.75$

Solution

$\because k+0.3+0.15+0.15+0.1+2 k=1$ $\Rightarrow k=0.1$ Now $E(x)=\sum p_i x_i=2.45$

Asked in: MHT CET 2022 (07 Aug Shift 2)

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