abelxoconda
20.12.2019 •
Mathematics
Bjork larsen was trying to decide whether to use a new racing wax for cross-country skis. he decided that the wax would be worth the price if he could average less than 55 seconds on a course he knew well, so he planned to study the wax by racing on the course 8 times. his 8 race times were 56.3, 65.9, 50.5, 52.4, 46.5, 57.8, 52.2, and 43.2 seconds. should he buy the wax? explain by using a confidence interval.
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Ответ:
Ok is this multi step pls reply and I will be right with! Step-by-step explanation: