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The strength of a standard structural steel for a certain construction project follows a normal distribution with mean 20 N/mm2 and variance 16 N/mm2. Find the probability that a randomly selected specimen from a supply batch of this steel has strength less than 25 N/mm2.
(a) Use the integral of the probability mass function,
(b) transform the normal distribution into a standard normal distribution and use the integral of the probability mass function for that distribution.
(c) Use the statistical tables for the cumulative standard normal distribution.
Now compute the standard deviation for this distribution.
What would be the estimated total enrollment for an HMO firm that administered 20 plans? Source: The Wall Street Journal Almanac 1999, p. 565.
listed below are the overhead widths in cm of seals measured from photographs and the weights in kg of the
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