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Five friends go bowling and finish with the following scores. Jim bowls a 129, Bob bowls a 150, Ann bowls a 133, Tom bowls a 162 and Gina bowls a 148. Find Tom's z-score. Treat the data as a population. Don't forget to round to the nearest tenth.

The book says value-mean divided by sd. I have no idea what sd is.

  • Statistics -

    sd=standard deviation

  • Statistics -

    oh thank you.

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