What proportion of the population would be expected to have a petal length (a) greater than 4.5 cm? (b) greater than 1.5 cm? (c) between 2.5 and 3.5 cm?

MATLAB: An Introduction with Applications
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Assume the petal length of a population of plants of species A is normally distributed with a mean of μ=3.5 cm and a standard deviation of σ=0.5 cm. What proportion of the population would be expected to have a petal length (a) greater than 4.5 cm? (b) greater than 1.5 cm? (c) between 2.5 and 3.5 cm?

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