Question
A manufacturer claims that the mean lifetime of its lithium batteries is less than 900 hours. A homeowner selects 20 of these batteries and finds
A manufacturer claims that the mean lifetime of its lithium batteries is less than 900 hours. A homeowner selects 20 of these batteries and finds the mean lifetime to be 855 hours with a
standard deviation of 95 hours. Test the manufacturer's claim. Use = 0.05.
A. P-value = 0.024 > 0.02; do not reject H0; There is not enough evidence support the claim, that mean is less than 900.
B. P-value = 0.024 < 0.05; reject H0; There is enough evidence support the claim, that mean is less than 900.
C. P-value = 0.048 > 0.05; do not reject H0; There is not enough evidence support the claim, that mean is less than 900.
D. P-value = 0.112 > 0.10; do not reject H0; There is not enough evidence support the claim, that mean is less than 900.
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