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A transcription error in the problem statement has resulted in a slightly different wording from the original, which stated that the standard deviation of diode B is 7, not 5 as stated here. Solution with original data: https://cutt.ly/7nxLn1n 👉👉 Contact information: 1️⃣Website: https://notodoesmatematicas.com 2️⃣Ko-fi: https://ko-fi.com/notodoesmatematemat... 3️⃣Email: [email protected] 4️⃣Twitter: @jmsreales 5️⃣Telegram: @jmsreales 6️⃣Facebook: No todo es matemáticas 7️⃣Instagram: @notodoesmatematicas