Question
A company produces your typical consumer battery. The company claims thattheir batteries last at least 150 hours on average Your experience with the company battery
A company produces your typical consumer battery. The company claims thattheir batteries last at least 150 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 claimis true. You believe that the mean life is actually less than he 150 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 is presented below.
Test of m is >= 150 versus one-tailed alternative
Hypothesized mean 150.0
sample mean 148.5
std error of mean 0.85
degrees of freedom 29
t-test statistic -1.764
p-value 0.044
If you were to use a 5 % significance level in this case, would you conclude that the mean life of the batteries is typically more than 150 hours? Explain
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