Question: please help AP Statistics - Quiz - Q1. The random variable X is approximately Normally distributed with a mean of 24 and a standard deviation
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AP Statistics - Quiz - Q1. The random variable X is approximately Normally distributed with a mean of 24 and a standard deviation of 5.1. Find the probability that X is at least equal 18.8. Please show work. A. Draw a picture (Normal Curve). Put the X values and the Z values on the curve, or draw two curves (one for X and one for Z). B. Write the probability statements in terms of X and Z. Provide the answer to four decimal places. Q2. The random variable X is the amount of money that a randomly selected adult has in his/her possession. X is rounded to the nearest ten dollars. X 10 20 30 P(X) 0.10 40 50 0.20 0.15 0.25 0.20 0.10 A. What is the mean or expected value of X? Interpret this value in context? B. What is the standard deviation of X? Interpret this value in context
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