Question

Question 32-35 are related Average speed on a freeway is 80 mph. Twenty percent (20%) of vehicles drive 15 miles above the speed limit of 70 miles per hour. 32 What fraction of vehicles drive below the speed limit? a 0.0615 b 0.0552 c 0.0465 d 0.0314 33 What fraction drive within +10 mph from the mean speed? a0.9362 b 0.9254 c 0.9070 d 0.8946 34 What fraction drive within a 0.8426 b 0.8664 C 0.8832 d 0.9042 1.5 standard deviations from the mean? 35 The middle speed interval within which 95% of vehicles drive is (Round your answers to the nearest integer.) to mph. 68 70 71 94 92 90 89 0

Answer 1

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cleuta lion : 0. 332 ,0663 ニ 0.9S に0.95 2 0.02S

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