Use Appendix Table III to determine to 5 decimal places the following probabilities for the standard normal random variable Z: (a) P(Z < 1.31) ▪ (b) P(Z < 3.0)= i (c) P(Z > 1.45) = (d) P(Z > 2.15) = i (e) P(-2.34 < Z < 1.76)

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### Standard Normal Distribution Probability Calculation

Use **Appendix Table III** to determine to 5 decimal places the following probabilities for the standard normal random variable \( Z \):

(a) \( P(Z < 1.31) \) = [Enter value]

(b) \( P(Z < 3.0) \) = [Enter value]

(c) \( P(Z > 1.45) \) = [Enter value]

(d) \( P(Z > -2.15) \) = [Enter value]

(e) \( P(-2.34 < Z < 1.76) \) = [Enter value]

### Instructions:

1. **Appendix Table III** refers to the Z-table which shows the cumulative probability of a standard normal distribution up to a given z-score.
2. Locate the z-score on the table to find its corresponding cumulative probability.
3. For values where \( Z > x \), use \( P(Z > x) = 1 - P(Z \le x) \).
4. For values within a range (e.g., \( a < Z < b \)), use \( P(a < Z < b) = P(Z \le b) - P(Z \le a) \).

\( \blacksquare \text{Ensure to find each probability to 5 decimal places.} \)
Transcribed Image Text:### Standard Normal Distribution Probability Calculation Use **Appendix Table III** to determine to 5 decimal places the following probabilities for the standard normal random variable \( Z \): (a) \( P(Z < 1.31) \) = [Enter value] (b) \( P(Z < 3.0) \) = [Enter value] (c) \( P(Z > 1.45) \) = [Enter value] (d) \( P(Z > -2.15) \) = [Enter value] (e) \( P(-2.34 < Z < 1.76) \) = [Enter value] ### Instructions: 1. **Appendix Table III** refers to the Z-table which shows the cumulative probability of a standard normal distribution up to a given z-score. 2. Locate the z-score on the table to find its corresponding cumulative probability. 3. For values where \( Z > x \), use \( P(Z > x) = 1 - P(Z \le x) \). 4. For values within a range (e.g., \( a < Z < b \)), use \( P(a < Z < b) = P(Z \le b) - P(Z \le a) \). \( \blacksquare \text{Ensure to find each probability to 5 decimal places.} \)
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