Fill in the missing information. 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 %

Question

Erica Mccarty

Mathematics

18 November, 20:50

Fill in the missing information. 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 %

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Aylin Orr · Answer 1

The z for $38.60 = (38.60 - 45) / 16 = - 0.4

The percent of area associated with $38.60 = P (z < - 0.4) = 0.34458 = 34.46%

The z for $57.80 = (57.8 - 45) / 16 = 0.8.

The percent of area associated with $57.80 = P (z < 0.8) = 0.78814 = 78.81%

the percent of his expenses between $38.60 and $57.80 is (78.81 - 34.46) = 44.35%