In the African savannah, elephants like to eat very young trees. Imagine that, in a section of the savannah, the mean height of young trees is 30.0 cm with a variance of 25.0 cm2. Assume that young tree height is normally distributed. a. What percentage of young trees would be eaten if elephants eat all trees shorter than 34.0 cm? b. In a section of the savannah, there are many young trees. If we take a random sample of 36 trees what is the probability that the mean height of our sample is between 28.0 and 33.0 cm?
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In the African savannah, elephants like to eat very young trees. Imagine
that, in a section of the savannah, the mean height of young trees is 30.0 cm with a variance of 25.0 cm2. Assume that young tree height is
a. What percentage of young trees would be eaten if elephants eat all
trees shorter than 34.0 cm?
b. In a section of the savannah, there are many young trees. If we
take a random sample of 36 trees what is the probability that the mean
height of our sample is between 28.0 and 33.0 cm?
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