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Author Question: A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is less ... (Read 78 times)

K@

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on: Jan 16, 2020
A shipping firm suspects that the mean life of a certain brand of tire used by its trucks is less than 30,000 miles. To check the claim, the firm randomly selects and tests 18 of these tires and gets a mean lifetime of 29,350 miles with a standard deviation of 1200 miles. At α = 0.05, test the shipping firm's claim. Round the test statistic to the nearest thousandth.
Statistics: Informed Decisions Using Data ¦ Sullivan ¦ 5th Edition
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Marked as best answer by K@ on Jan 16, 2020

ririgirl15

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Reply #1 on: Jan 16, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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K@

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Reply 2 on: Jan 16, 2020
Excellent

amit

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Reply 3 on: Yesterday
Wow, this really help

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