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- anonymous

twenty-five percent of adults say they would watch straming movies on their phone at work.you randomly select 12 adults and ask them if they would watch streaming movies on their phone at work. Find the probability that the number who say they would watch streaming movies on their phone at work is(a) exactly four, (b) more than four, (c) between four and eight, inclusive.

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- anonymous

- schrodinger

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- anonymous

how would i do this on a graphing calc? thanks

- anonymous

I'm assuming you know how to do it by hand.
use the equation: \[\rho-p \div\sqrt{p(p-1)/n} \]
P(hat) would be x/n so .25/12=.0208 or the numbers provided !
On calculator:
go to 2nd ==> VARS ==> #2 (NORMALCDF)

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