Question

2.2 A household has weekly income of $2,000. The mean weekly expenditure for households with this income is Ely ditures exhibit variance var(y|x-$2,000) $2,000) jr -$2,000 $200, and expen- ơ2r-2,000-100. (a) Assuming that weekly food expenditures are normally distributed, find the probability that a household with this income spends between $180 and $215 on (b) Find the probability that a household with this income spends more than $250 on (c) Find the probability in part (a) if the variance of weekly expenditures is d) Find the probability in part (b) if the variance of weekly expenditures is food in a week. Include a sketch with your solution. food in a week. Include a sketch with your solution. var $2,000)$2,000-81 var(y(x-$2,000-%.12,00,-81.

All parts please.

Answer 1

Page No. Date expendituh Assume that the-weekly-부ood datibukd That-11L-normally 20 d) ーー0,9332 0.0228 (Pom-z-table) 0 1.5 0.199 1 , 0.000001