QUESTION 9 Suppose that the average annual revenue of a small business is $150,000 with a standard deviation of $40,000. Assume that the revenue normal. What is the probability that the average annual revenue of a random sample of 4 businesses is less than $120,000? O P(Z > 0) = 0.5000 O P(Z < -1.5) =0.0668 O P(Z > -1.5) = 0.9332 O P(Z < -0.75) = 0.2296

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.