Question
Let \( Z \sim N(0,1) \). Accurate to 4 decimal places, evaluate \( P(Z \geq-0.65) \) 0.2422 0.2578 0.4843 0.7422 None of the above.
Ask by Murphy Moreno. in the United States
Mar 09,2025
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Answer
\( P(Z \geq -0.65) \approx 0.7422 \)
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To evaluate \( P(Z \geq -0.65) \), we can use the properties of the standard normal distribution. First, we find \( P(Z < -0.65) \) using the standard normal table or a calculator, which gives us approximately \( 0.2578 \). Now, since we're interested in the probability of \( Z \) being greater than or equal to -0.65, we calculate: \[ P(Z \geq -0.65) = 1 - P(Z < -0.65) = 1 - 0.2578 = 0.7422 \] Therefore, the answer is \( 0.7422 \).