Multiple Choice 1 point Find the probability that a z-score is between -2.55 and -0.39 . Notice that because it is a \( z \)-score, we are using the standard normal distribution so mu is 0 and sigma is 1 . 0.3429 0.3483 0.6311 0.6517

To find the probability that a z-score falls between -2.55 and -0.39, you'll need to consult the standard normal distribution table (Z-table) or use a calculator that provides cumulative probabilities for the standard normal distribution. 1. The cumulative probability for \( z = -2.55 \) is approximately 0.0054. 2. The cumulative probability for \( z = -0.39 \) is approximately 0.3483. Now, subtract the two probabilities: \( P(-2.55 < Z < -0.39) = P(Z < -0.39) - P(Z < -2.55) \) So, \( P(-2.55 < Z < -0.39) = 0.3483 - 0.0054 = 0.3429 \) Thus, the probability that a z-score is between -2.55 and -0.39 is **0.3429**.