Questions: Find the indicated probability using the standard normal distribution.
P(0<z<0.665)
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P(0<z<0.665)=
(Round to four decimal places as needed.)
Transcript text: Find the indicated probability using the standard normal distribution.
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Solution
Solution Steps
To find the probability \( P(0 < z < 0.665) \) using the standard normal distribution, we need to calculate the cumulative distribution function (CDF) for \( z = 0.665 \) and subtract the CDF for \( z = 0 \). The CDF gives the probability that a standard normal random variable is less than or equal to a given value. Since the CDF for \( z = 0 \) is 0.5, we can use this to find the desired probability.
Step 1: Calculate the CDF for \( z = 0.665 \)
To find the probability \( P(0 < z < 0.665) \), we first calculate the cumulative distribution function (CDF) for \( z = 0.665 \). The CDF value is approximately \( 0.7470 \).
Step 2: Calculate the CDF for \( z = 0 \)
The CDF for \( z = 0 \) in a standard normal distribution is \( 0.5 \).
Step 3: Compute the Probability \( P(0 < z < 0.665) \)
The probability \( P(0 < z < 0.665) \) is given by the difference between the CDF values calculated in the previous steps:
\[
P(0 < z < 0.665) = \text{CDF}(0.665) - \text{CDF}(0) = 0.7470 - 0.5 = 0.2470
\]
Final Answer
The probability \( P(0 < z < 0.665) \) is \(\boxed{0.2470}\).