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A particular fruit's weights are normally distributed, with a mean of 308 grams and a standard deviation of 31 grams.

The heaviest 9% of fruits weigh more than how many grams?

Give your answer to the nearest gram.

  • Statistics -

    so 91 percent weight X or below.

    I get about 349 grams.

    check it here.

  • Statistics -

    You can also find table in the back of your statistics text labeled something like "areas under normal distribution" to find that proportion related to a Z score.

    Z = (score-mean)/SD

    Insert values and solve for score.

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