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In a random sample of 85 automobile engine
crankshaft bearings, 10 have a surface finish
roughness that exceeds the specifications. Do
these data present strong evidence that the
proportion of crankshaft bearings exhibiting
excess surface roughness exceeds 0.10?
(a) State the appropriate hypotheses.
O Hop 0.10 and
H₁ p < 0.10
O Ho:p=0.10 and
H:p> 0.10
O Ho: p=0.10 and
H₁:p0.10
eTextbook and Media
Test the appropriate hypotheses using
a= 0.05. Find o
Round your answer to two dec
(e.g. 98.76).
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