Test the claim that the mean lifetime of a particular car engine is greater than 220,000 miles. Sample data are summarized as n=23, x=226,450 miles, and s-11,500 miles. Use a significance level of a = 0.01 Ho: H = 220,000 Ha: μ> 220,000 State your conclusion about Ho. z = -2.69, reject Ho t= -2.69, reject Ho t = 2.69, reject Ho t= -2.69, reject Hodo not reject Ho t = 12.9, reject Ho

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9.

Assume that a simple random sample has been selected from a normally distributed population. State the final conclusion.
Test the claim that the mean lifetime of a particular car engine is greater than 220,000 miles. Sample data are summarized as n=23, x=226,450 miles, and s= 11,500 miles. Use a significance level of a = 0.01.
Ho: μ = 220,000 Ha: μ> 220,000
State your conclusion about Ho.
z = -2.69, reject Ho
t = -2.69, reject Ho
t = 2.69, reject Ho
Ot= -2.69, reject Hodo not reject Ho
Ot= 12.9, reject Ho
Transcribed Image Text:Assume that a simple random sample has been selected from a normally distributed population. State the final conclusion. Test the claim that the mean lifetime of a particular car engine is greater than 220,000 miles. Sample data are summarized as n=23, x=226,450 miles, and s= 11,500 miles. Use a significance level of a = 0.01. Ho: μ = 220,000 Ha: μ> 220,000 State your conclusion about Ho. z = -2.69, reject Ho t = -2.69, reject Ho t = 2.69, reject Ho Ot= -2.69, reject Hodo not reject Ho Ot= 12.9, reject Ho
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