The costs of four new cellular phones are $160, $215, $99 and $195.

label Statistics
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schedule 1 Day
account_balance_wallet $5

What is the standard error of the mean of these four cellular phones?

Mar 3rd, 2015

mean ,x=(160 +215+99+195) /4=167.25

\text{SE}_\bar{x}\ = \frac{s}{\sqrt{n}}


standard error of the mean=29.365

Mar 3rd, 2015

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