$\backslash$table$[[\backslash$table$[[$Cost of$],[$Washeribryer$]]],[,,2\mathrm{.}698],[,,3,028],[,,3\mathrm{.}687],[,$s$.,2,395],[,$:$,2,372],[,$$$,2\mathrm{.}475],[,$$$,2,928],[,$$$,3\mathrm{.}006],[,$$$,3\mathrm{.}334],[,$$$,3\mathrm{.}379],[2,$$$,4\mathrm{.}430],[,$$$,4\mathrm{.}434],[4,$$$,2\mathrm{.}437],[5,$$$,2,687],[5,$$$,2\mathrm{.}445],[$FiH$,$$$,2\mathrm{.}449],[18,$$$,2\mathrm{.}453],[19,$$$,2\mathrm{.}457],[20,$$$,3\mathrm{.}460],[21,$$$,2\mathrm{.}464],[22,$$$,2\mathrm{.}468],[23,$$$,3\mathrm{.}456],[24,$$$,2\mathrm{.}476],[25,$$$,2\mathrm{.}479],[26,$$$,3\mathrm{.}458],[27,$$$,2\mathrm{.}487],[28,$$$,2\mathrm{.}491],[29,$$$,2\mathrm{.}495],[30,$$$,2,499],[31,$$$,3,362],[32,$$$,3,500],[33,$$$,3,654],[34,$$$,3\mathrm{.}874],[35,$$$,3,654],[35,,3,200],[37,1,4,400],[38,,3,890],[39,$$$,4\mathrm{.}500],[40,,5,500],[41,$$$,2,545]]$

$30$ families were asked the awerage amount of money spent on a new washer and dryer and their responses are listed in cells

A$1$:A$41$

$\backslash$table$[[$A$),$What is the point estimate of the population mean?$],[3,135,,],[$B$),$Develop y $90\%$ confidence interval.$],[$Lower$,$Upper,$