The-probability-density-function-f-x-of-a-variable-x-is-given-by-f-x-kxsin-pix-0-x-1-0-for-all-value-of-x-Show-that-k-pi-and-deduce-that-mean-and-the-variance-of-the-distribution Tinku Tara June 4, 2023 Probability and Statistics 0 Comments FacebookTweetPin Question Number 192377 by Spillover last updated on 16/May/23 Theprobabilitydensityfunctionf(x)ofavariablexisgivenbyf(x)={kxsinπx0⩽x⩽10forallvalueofxShowthatk=πanddeducethatmeanandthevarianceofthedistributionare(1−4π2)and2π2(1−8π2) Answered by mehdee42 last updated on 16/May/23 ∫01kxsinπxdx=1⇒−kπxcosπx+kπ2sinπx]01=1⇒k=π✓E(x)=∫01πx2sinπxdx=π(−x2πcosπx+2xπ2sinπx+2π2cosπx]01π(1π−4π3)=1−4π2✓E(x2)=∫01x3sinπxdx=π[−x3πcosπx+3x2πsinπx−6xπ3cosπx+6π4sinπx]01=1−6π2Var(x)=E(x2)−E2(x)=1−6π2−(1−4π2)2=2π2(1−8π2)✓ Commented by Spillover last updated on 16/May/23 yourright. Terms of Service Privacy Policy Contact: info@tinkutara.com FacebookTweetPin Post navigation Previous Previous post: Question-61303Next Next post: calculus-I-prove-i-2x-x-x-1-2-ii-3x-x-x-1-3-x-2-3- Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Save my name, email, and website in this browser for the next time I comment.