Question

Only need help with finding the mean and standard deviation.

Answer 1

Given

Probability distribution table

Find

Mean and standard deviation

Explanation

mean for probability distribution is given by

$mean=\sum_^xP(x)$

so , mean

$\begin{gathered} 0+0.25+0.54+0.36+0.64 \\ 1.79 \end{gathered}$

standaed deviation

$\begin{gathered} \sum_^x^2P(x) \\ 0+0.25+1.08+1.08+2.56 \\ 4.97 \end{gathered}$

Final Answer

mean = 1.79

standard deviation = 4.97