Assume that a simple random sample has been selected from a normally distributed population and test the given claim.
Use either the traditional method or P-value method as indicated. Identify the null and alternative hypotheses, test statistic, critical value(s) or P-value (or range of P-values) as appropriate, and state the final conclusion that addresses the original claim.
-A light-bulb manufacturer advertises that the average life for its light bulbs is 900 hours. A random sample of 15 of its light bulbs resulted in the following lives in hours.
$$\begin{array} { l l l l l l l l }
995 & 590 & 510 & 539 & 739 & 917 & 571 & 555 \
916 & 728 & 664 & 693 & 708 & 887 & 849 &
\end{array}$$
At the 10% significance level, test the claim that the sample is from a population with a mean life of 900 hours. Use the P-value method of testing hypotheses.

Question

Assume that a simple random sample has been selected from a normally distributed population and test the given claim.
Use either the traditional method or P-value method as indicated. Identify the null and alternative hypotheses, test statistic, critical value(s) or P-value (or range of P-values) as appropriate, and state the final conclusion that addresses the original claim.
-A light-bulb manufacturer advertises that the average life for its light bulbs is 900 hours. A random sample of 15 of its light bulbs resulted in the following lives in hours. 
$$\begin{array} { l l l l l l l l } 
995 & 590 & 510 & 539 & 739 & 917 & 571 & 555 \
916 & 728 & 664 & 693 & 708 & 887 & 849 &
\end{array}$$
 At the 10% significance level, test the claim that the sample is from a population with a mean life of 900 hours. Use the P-value method of testing hypotheses.

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The Answer of Assume that a simple random sample has been selected from a normally distributed population and test the given claim.
Use either the traditional method or P-value method as indicated. Identify the null and alternative hypotheses, test statistic, critical value(s) or P-value (or range of P-values) as appropriate, and state the final conclusion that addresses the original claim.
-A light-bulb manufacturer advertises that the average life for its light bulbs is 900 hours. A random sample of 15 of its light bulbs resulted in the following lives in hours. 
$$\begin{array} { l l l l l l l l } 
995 & 590 & 510 & 539 & 739 & 917 & 571 & 555 \
916 & 728 & 664 & 693 & 708 & 887 & 849 &
\end{array}$$
 At the 10% significance level, test the claim that the sample is from a population with a mean life of 900 hours. Use the P-value method of testing hypotheses.

Assume That a Simple Random Sample Has Been Selected from a Normally