7.2.3 WP VS A synthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. Find the probability that a random sample of n = 6 fiber specimens will have sample mean tensile strength that exceeds 75.75 psi.

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### Example Problem 7.2.3

**Context**: A synthetic fiber used in manufacturing carpet has tensile strength that is normally distributed.

**Given**:
- Mean tensile strength (\(\mu\)) = 75.5 psi
- Standard deviation (\(\sigma\)) = 3.5 psi
- Sample size (\(n\)) = 6

**Objective**: Find the probability that a random sample of 6 fiber specimens will have a sample mean tensile strength that exceeds 75.75 psi.

To solve this problem, consider using the properties of the sampling distribution of the sample mean and apply the Z-score formula.
Transcribed Image Text:### Example Problem 7.2.3 **Context**: A synthetic fiber used in manufacturing carpet has tensile strength that is normally distributed. **Given**: - Mean tensile strength (\(\mu\)) = 75.5 psi - Standard deviation (\(\sigma\)) = 3.5 psi - Sample size (\(n\)) = 6 **Objective**: Find the probability that a random sample of 6 fiber specimens will have a sample mean tensile strength that exceeds 75.75 psi. To solve this problem, consider using the properties of the sampling distribution of the sample mean and apply the Z-score formula.
Expert Solution
Step 1: Determine the given data

From the provided information,

text Mean end text open parentheses mu close parentheses equals 75.5
text Standard deviation end text open parentheses sigma close parentheses equals 3.5
text Sample size end text open parentheses n close parentheses equals 6

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