The speed limit on a stretch of road is 65mph. A state trooper believesthe average speed of the drivers on this stretch is higher. He sample 80 drivers. Thecritical value for his test is z=1.96, and the test value is z=2.35. What conclusion canbe made about his claim.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 3CYU
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The speed limit on a stretch of road is 65mph. A state trooper believes
the average speed of the drivers on this stretch is higher. He sample 80 drivers. The
critical value for his test is z=1.96, and the test value is z=2.35. What conclusion can
be made about his claim. 

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