55 A random sample of n = 68 observations is selected from a population with m =...
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55 A random sample of n = 68 observations is selected from a population with m = 19.6 and s = 3.2. Approximate each of the following probabilities:
a. P(x … 19.6)
b. P(x … 19)
c. P(x Ú 20.1)
d. P(19.2 … x … 20.6)
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