Question
Find the indicated probability using the standard normal distribution.
\( P(-3.04
Ask by Rogers Fleming. in the United States
Feb 18,2025
Ask by Rogers Fleming. in the United States
Feb 18,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The probability \( P(-3.04 < z < 3.04) \) is 0.9976.
Solution
We need to find P(–3.04 < z < 3.04). Because the standard normal distribution is symmetric about 0, we can use the property:
P(–a < z < a) = 2Φ(a) – 1
Here, a = 3.04, so we have:
P(–3.04 < z < 3.04) = 2Φ(3.04) – 1
Using the standard normal table for z = 3.04, we find that:
Φ(3.04) ≈ 0.9988
Now substitute this value:
P(–3.04 < z < 3.04) = 2(0.9988) – 1 = 1.9976 – 1 = 0.9976
Rounded to four decimal places, the probability is 0.9976.
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Beyond the Answer
To find the probability \( P(-3.04