Question: Please I need help with this for better understanding and clarity. Thank you. i. If the length of time required by students to complete a

Please I need help with this for better understanding and clarity. Thank you.

Please I need help with this for better understanding and clarity. Thank

i. If the length of time required by students to complete a 1-hour exam is a random variable with a pdf given by fx(x)=ccx2+x if 0x1 then what is the probability a student finishes in less than a half hour? Also, calculate the variance of this distribution. [6 MARKS ] ii. If a random variable X has the probability density function (pdf) f(x)={ex20forx

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