Question: Just getting a check over , would I for sure use p- values for # 2 instead of the symbol for the mean 1. The

Just getting a check over, would I for sure use p-values for #2 instead of the symbol for the mean

1. The lifetime for a certain brand of widgets is normally distributed. A random sample of 25 widgets is taken and a sample mean lifetime of 520 hours with a standard deviation of 50 hours. Before taking the sample, researchers speculated that the mean lifetime of the widgets is no more than 500 hours. Answer the questions below using the given information. a) null hypothesis: H : H= 520 b) the alternative hypothesis: HA : |

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