The manufacturer of a particular battery pack for laptop computers claims its battery packs can function for 8 hours, on the average, before having to be recharged. A competitor claims that the manufacturer's claim is too high. A random sample of 35 battery packs was selected and placed on test. The mean functioning time before having to be recharged was 7.3 hours with a standard deviation of 1.9 hours. Perform the appropriate test of hypothesis to determine whether the competitor is correct. Test using alpha = 0.05. Based on the test statistic, what can you conclude?

Test statistic = -12.89473684, so we should not reject the manufacturer's claim.

Test statistic = -12.89473684, so we should reject the manufacturer's claim

Test statistic = -2.179608341, so we should not reject the manufacturer's claim.

Test statistic = -2.179608341, so we should reject the manufacturer's claim.

Test statistic = -3.004382764, so we should reject the manufacturer's claim.