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categoryإحصاء schoolبكالوريوس event_available2026-07-14

السؤال

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Let x be a continuous random variable with a standard normal distribution. a) Using the accompanying standard normal distribution table, find P(-2.38 ≤x≤2.38). b) What percentage of the area is from -2.38 to 2.38? Click the icon to view the standard normal distribution table. a) P(-2.38≤x≤2.38)= | (Round to four decimal places as needed.) b) The percentage of the area from -2.38 to 2.38 is %. (Round to two decimal places as needed.) Let x be a continuous random variable that is normally distributed with mean μ-23 and standard deviation σ = 2. Using the accompanying standard normal distribution table, find P(25≤x≤26). Click the icon to view the standard normal distribution table. The probability is (Round to four decimal places as needed.)

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