A company produces your typical consumer battery. The company claims that their batteries last at least 100 hours on average. Your experience with the company battery has been somewhat different, so you decide to conduct a test to see if the companies claim is true. You believe that the mean life is actually less than the 100 hours the company claims. You decide to collect data on the average battery life (in hours) of a random sample and the information related to the hypothesis test ispresented below.

Test of m>= 100 versus one-tailed alternative

Hypothesized mean 100

sample mean 98.5

std error of mean 0.777

degrees of freedom 19

t-test statistic -1.932

p-value 0.034

You believe that the mean life I actually less than 100 hours, should you conduct a one-tailed or two tailed hypothesis test? Explain your answer