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A random sample of 50 observations yielded the following frequencies for the standardized intervals:

Interval Frequency

Z ≤ −1.............. 6

−1 < Z ≤ 0 ...........27

0 < Z ≤ 1 ............14

Z > 1 ............. 3

Can we infer that the data are not normal? (Use α = .10.)

10th Edition

Authors: Gerald Keller

ISBN: 9781285869643