In a group of 250250 dolphins, the average body length is 2.72.7 meters with a standard deviation of 0.30.3 meters. The data are normally distributed. Calculate the zz-score for a body length of 3.43.4 meters and determine if this is unusual.

In a group of 250250 dolphins, the average body length is 2.72.7 ...

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In a group of 250250 dolphins, the average body length is 2.72.7 meters with a standard deviation of 0.30.3 meters. The data are normally distributed. Calculate the zz-score for a body length of 3.43.4 meters and determine if this is unusual.

In a group of $250$ dolphins, the average body length is $2.7$ meters with a standard deviation of $0.3$ meters. The data are normally distributed. Calculate the $z$ -score for a body length of $3.4$ meters and determine if this is unusual.