Critical value and test statistic

Reference no: EM1390784

A light-bulb manufacturer advertises that the average life for its light bulbs 900 hours. A random sample of 10 of its light bulbs resulted in the following lives in hours. At the 10% significance level, do the data provide evidence that the mean life for the company's light bulbs differs from the advertised mean?

Give the null and alternate hypotheses.

Also the critical value, test statistic, does evidence support or not support.

Reference no: EM1390784

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