The heights of a certain population of corn plants follow a normal distribution with mean 145 cm
Question:
(a) What percentage of the plants are between 135 and 155 cm tall?
(b) Suppose we were to choose at random from the population a large number of samples of 16 plants each. In what percentage of the samples would the sample mean height be between 135 and 155 cm?
(c) If Y represents the mean height of a random sample of J6 plants from the population, what is Pr{135 ≤ ≤ 155}?
(d) If Y represents the mean height of a random sample of^36 plants from the population, what is Pr{135 ≤ ≤ 155}? Distribution
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145 o 22 a b c d 155145 045 22 Table 3 gives 06736 Z 135145 22 045 Table 3 gives 03264 T...View the full answer
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Related Book For 
Statistics For The Life Sciences
ISBN: 9780321989581
5th Edition
Authors: Myra Samuels, Jeffrey Witmer, Andrew Schaffner
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