B. A manufacturer of car batteries claims that the life of the company's batteries is approximately normally distributed with a standard deviation equal to 0.9 year. If a random sample of 10 of these batteries has a standard devotion of 13 years, do you think that o> 0.9 year? Use level of significance 0.05. Using the five-step procedure results hint: (x² (0-8³²) x= Σ E 1. State the null and alternative hypothesis H 2. State the Level of significance/ degree of freedom 3. Use the appropriate test statistics 4. State the critical or rejection region 5. Make your conclusion and recommendation H:

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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B.
A manufacturer of car batteries claims that the life of the company's batteries is approximately normally distributed
with a standard deviation equal to 0.9 year. If a random sample of 10 of these batteries has a standard devotion of 12
years, do you think that o> 0.9 year? Use level of significance 0.05. Using the five-step procedure results.
(0-E)
hint: x= Σ
1. State the null and alternative hypothesis
2.
State the Level of significance/ degree of freedom
Use the appropriate test statistics
3.
4.
State the critical or rejection region
5. Make your conclusion and recommendation
H:
Hi
Transcribed Image Text:B. A manufacturer of car batteries claims that the life of the company's batteries is approximately normally distributed with a standard deviation equal to 0.9 year. If a random sample of 10 of these batteries has a standard devotion of 12 years, do you think that o> 0.9 year? Use level of significance 0.05. Using the five-step procedure results. (0-E) hint: x= Σ 1. State the null and alternative hypothesis 2. State the Level of significance/ degree of freedom Use the appropriate test statistics 3. 4. State the critical or rejection region 5. Make your conclusion and recommendation H: Hi
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