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Mathematics 7 Online
OpenStudy (dannyrod2000):

http://prntscr.com/51sdnr

OpenStudy (dannyrod2000):

@perl

OpenStudy (perl):

you can use the same idea

OpenStudy (perl):

we will use the TI 83

OpenStudy (perl):

do you own one? it will be very useful

OpenStudy (dannyrod2000):

own what?

OpenStudy (perl):

calculator

OpenStudy (dannyrod2000):

yes lol

OpenStudy (perl):

ti 83 is a type of calculator.

OpenStudy (dannyrod2000):

o

OpenStudy (dannyrod2000):

idk

OpenStudy (perl):

ok if you press 2nd vars

OpenStudy (dannyrod2000):

i don't have it

OpenStudy (dannyrod2000):

well not that i know of

OpenStudy (perl):

oh

OpenStudy (perl):

for this problem you need to use a z table or a calculator

OpenStudy (dannyrod2000):

z table

OpenStudy (perl):

some statistics books have a cutout

OpenStudy (dannyrod2000):

D?

OpenStudy (dannyrod2000):

Shaded area = P(z < 0.85) - P(z < - 1.2) = 0.8023 - 0.1151 = 0.6872

OpenStudy (dannyrod2000):

@perl

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