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Mathematics, 11.12.2019 18:31 offensiveneedle

At a certain grocery store 65% of the customers regularly use coupons.
what is the approximate standard deviation of the sampling distribution of the proportion for
samples of size 340?
a.11.1%
b.6.7%
c.4.4%
d.2.6%

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At a certain grocery store 65% of the customers regularly use coupons.
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