## Answers

H0: <= 2.8

Ha: > 2.8

The test is right tailed. .

Test statistics

t = - / S / sqrt(n)

2.82 - 2.8 / 0.03 / sqrt(65)

= 5.37

The p-value for 0.025 level with 64 df = **0**

Since p-value < 0.025 level.

**Reject the null hypothesis**

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