Light bulb manufacturer claims that its bulbs have a mean life of 139.5 hours. A consumer group decides to test this hypothesis at the 5% level of significance. Which of the following is not an appropriate interpretation of the 5% level of significance? a) 5% is the probability of a Type I error b) 5% is the probability of rejecting the null hypothesis when it’s true c) 5% is the probability of accepting the null hypothesis when it’s false d) 5% is the criteria for judging whether the sample statistic is sufficiently extreme to cast doubt on the manufacturer’s claim e) None of these is an appropriate interpretation