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15 July, 14:50

The lengths of a certain species of fish are approximately normally distributed with a given mean and standard deviation. According to the Empirical Rule, what percentage of the fish will have lengths within 1 standard deviation of the mean?

a) 34%

b) 47.5%

c) 68%

d) 99.7%

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Answers (2)
  1. 15 July, 15:01
    0
    c.) 68%

    Step-by-step explanation:

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  2. 15 July, 18:07
    0
    c) 68%

    Step-by-step explanation:

    The empirical rule states that most of the data will be within three standard deviations in a normal distribution. The 68% of the data will be within one standard deviation, the 95% will be within two standard deviations, and 99.7% of the data will be within three standard deviations.

    A normal distribution is a continuous distribution in which values around the mean are the most frequents. It can also be called a bell-shaped distribution.
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