Significance Level for Accompanying Data

The accompanying data are the times in seconds that it took a sample of employees to assemble a
component at Ental Industries manufacturing facility. Assembly times are normally distributed. At the .05 significance level, can we conclude that the mean assembly time for this component is not equal to 3 minutes? Use HA:   180.

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...:
Null hypothesis:
H0: =180(3 minutes)
H0: The mean assembly time for the component is equal to 3 minutes

Alternate hypothesis:
H1: ≠ 180 (3 minutes)
H1: The mean assembly time for the component is not equal to 3 minutes

Decision Rule:

If the P-value of the test statistic is less than 0.05 we reject the null hypothesis ...