(Solution) - The heights of a certain population of corn plants follow -(2025 Original AI-Free Solution)

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The heights of a certain population of corn plants follow a normal distribution with mean 145 cm and standard deviation 22 cm (as in Exercise 4.S.4).
(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}?