An angle is observed repeatedly using the same

equipment and procedures producing the data

below:

$56{34}^{\text{'}}{00}^{\text{'}\text{'}},56{34}^{\text{'}}{10}^{\text{'}\text{'}},56{34}^{\text{'}}{10}^{\text{'}\text{'}},56{33}^{\text{'}}{55}^{\text{'}\text{'}},$

$56{33}^{\text{'}}{58}^{\text{'}\text{'}},$ and $56{34}^{\text{'}}{02}^{\text{'}\text{'}}.$

Part B

Calculate the standard deviation.

Express your answer in seconds to two significant figures.

$=$

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Part C

Calculate the standard deviation of the mean.

Express your answer in seconds to two significant figures.

${}_m=$