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 test 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, 52.5, 43.2 Should he buy the wax? Perform an appropriate hypothesis test and state your conclusion, in context.

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter7: Rational Expressions And Functions
Section7.5: Solve Applications With Rational Equations
Problem 7.96TI: Joon drove 4 hours to his home, driving 208 miles on the interstate and 40 miles on country roads....
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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 test 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, 52.5, 43.2

Should he buy the wax? Perform an appropriate hypothesis test and state your conclusion, in context.

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