Mathematics

Julia Park

7 June, 06:34

Tim Worker is doing his budget. He discovers that the average miscellaneous expense is $45.00 with a standard deviation of $16.00. What percent of his expense in this category would he expect to fall between $38.60 and $57.80? The z for $38.60 = - ___. The percent of area associated with $38.60 = ___%

The z for $57.80 = ___. The percent of area associated with $57.80 = ___%

Adding the two together, the percent of his expenses between $38.60 and $57.80 is ___%