hello

if anybody knows about this,please help me with that:(

thank you

@ koduta excelrzonvened pdfeAdobe Reader 1 X File [an VIEW windw Help at 'Fl@@l7@aMl_E,_v. lulmxvl|gl Tools Fillasign Comment 5mm 7 Export nor AdubcExpurIPDF @ The problem University students have to buy reference books needed during the term.Cost of this purchase per student is a random variable distributed normally. The standard deviation 0 = 2.5 of this distribution is known, 0' = 0.5 .At confidence level y = 0,94, find the interval estimate for the population mean cost ofthe books, Use recorded costs in a random sample 11,82 11,74 12,23 11,85 10,97 12,14 12,04 12,03 11,81 12,38 11,63 12,4 12,11 12,04 12,37 11,27 12,64 11,84 11,54 11,8 12,41 12,89 11,81 12,25 11,55 Copy this sample to your Excel sheet - Find the sample size n - Evaluate the sample mean, E. - Evaluate the sample standard deviation (standard error of the mean) 0'}. - According to the confidence level, find the coefficient 27 - Evaluate margin of error(radius of the confidence interval), 5 . - Give the interval estimate Save your Excel file and load it up in Moodle Convert PDFflleilo Word a! nal nnlme Selen woe my @ mm excl-{unveiled nor Hue/94KB Convert Toe Mlimso Word Mum) ' Recvgmz: Tm m EngllsMUSJ Chang: Convert > Create PDF . Edi! PDF > Combine PDF > Send Fila > Store File