A company wants to test the claim that their batteries last more than 40 hours. Using a simple random sample of 18 batteries yielded the following battery life: 35 54 36 50 53 42 37 51 37 40 55 45 45 42 52 45 39 47 Test this claim using a significance level of 0.01. What is the value of t-critical? (Answer in 2 decimal place) Your answer What is the test statistic? (Answer in 1 decimal place) Your answer What is the decision? Reject the null hypothesis O Fail to reject the null hypothesis

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