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Question 1

A shop sells trees of different types and heights. These trees average 60 inches in height with a standard deviation of 16 inches. Suppose that 75 pine trees are sold for planting at City Hall. What is the standard deviation for the sample mean? A. 0.21 B. 1.85 C. 3.75 D. 6.93A random sample of size 34 is taken from a population with mean, J = 19 and standard deviation, o = 6. The probability that the sample mean is greater than 18 is A. 0.087 B. 0.116 C. 0.834 D. 0.913