Mathematics, 18.04.2020 02:43 kyla322
A tire company advertises that its tires will last, on average, 60,000 miles. You are interested in determining if the average life of the company's tires is less than what was advertised. One hundred of the company's tires were randomly selected, and the average life of those tires was 58,500 miles with a standard deviation of 10,000 miles. (alpha=0.05) The parameter represents the population mean life of all the company's tires.
a) State the null and alternative hypotheses.
b) What is the sample?
c) Calculate the standard score.
d) What type of test was performed?
e) The p-value is...
f) What is the decision?
g) What is the conclusion?
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A tire company advertises that its tires will last, on average, 60,000 miles. You are interested in...
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