Assume you have a normal distribution representing the likelihood of completion times.The mean of this distribution is 10, and the standard deviation is 3.The probability of completing the project in 8 or fewer days is the same as the probability of completing the project in 18 days or more.

Question

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We need to find the z-scores for 8 and 18 days using the formula z = (x - mu) / sigma, where x is the value (8 or 18), mu is the mean (10), and sigma is the standard deviation (3).
For 8 days, z = (8 - 10) / 3 = -0.67
For 18 days, z = (18 - 10) / 3 = 2.67
Using a standard normal table or calculator, we find that the probability of z being less than -0.67 is 0.2514 and the probability of z being greater than 2.67 is 0.0035. Therefore, the probability of completing the project in 8 or fewer days is 0.2514 and the probability of completing the project in 18 days or more is 0.0035. These probabilities are not the same, so the answer is B (False).

Assume You Have a Normal Distribution Representing the Likelihood of Completion