Mathematics, 22.08.2020 22:01 lwaites18
The breaking strength of hockey stick shafts made of two different graphite-Kevlar composites yield the following results (in newtons):
Composite A: 487.3 444.5 467.7 456.3 449.7 459.2 478.9 461.5 477.2
Composite B: 488.5 501.2 475.3 467.2 462.5 499.7 470.0 469.5 481.5
485.2 509.3 479.3 478.3 491.5
Assuming normality, can you conclude that the mean breaking strength is smaller for hockey sticks made from composite B by at least 2 newtons? Carry out the appropriate test by hand.
Answers: 3
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