In: Statistics and Probability
The Boston Bulb Company produces high-cost bulbs for expensive projection equipment. Johnson, the CEO, claims that a particular bulb type has an average life of at least 600 hours.
Fourteen of these bulbs were randomly selected and tested. The number of hours each bulb lasted was:
614,598,585,572,599,605,604,590,609,606,595,592,601,592
At the significance level, test Johnson's claim about the life of the bulbs.