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An Industrial Researcher Wants to Perform a Test with the Intent

Question 35

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An industrial researcher wants to perform a test with the intent of establishing that this company's compact fluorescent lamp has a mean life greater than 7100 hours. The sample size is 128 and he knows that σ\sigma =79 hours.
Find the numerical value of c so that the test An industrial researcher wants to perform a test with the intent of establishing that this company's compact fluorescent lamp has a mean life greater than 7100 hours. The sample size is 128 and he knows that \sigma =79 hours. Find the numerical value of c so that the test has a 5% level of significance. A) 7106.98 B) 7107.13 C) 7111.49 D) 7088.51 has a 5% level of significance.


A) 7106.98
B) 7107.13
C) 7111.49
D) 7088.51

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