The following data are believed to have come from a normal probability distribution.
The mean of this sample equals 26.80, and the standard deviation equals 6.378.Use the goodness-of-fit test at the 5% significance level to test whether the data indeed come from a normal distribution.

Question

The following data are believed to have come from a normal probability distribution.
  The mean of this sample equals 26.80, and the standard deviation equals 6.378.Use the goodness-of-fit test at the 5% significance level to test whether the data indeed come from a normal distribution.

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The Answer of The following data are believed to have come from a normal probability distribution.
  The mean of this sample equals 26.80, and the standard deviation equals 6.378.Use the goodness-of-fit test at the 5% significance level to test whether the data indeed come from a normal distribution.

The Following Data Are Believed to Have Come from a Normal