Question

In some states the law requires drivers to turn on their headlights when driving in the rain. A highway patrol officer disagrees with this statement and believes that less than (.30) of all drivers follow this rule. As a test, she randomly samples 275 cars driving in the rain and counts the number whose headlights are turned on. She finds this number of cars with headlights on to be 19. Does the officer have enough evidence at 5% level of significance to support her belief that fewer than .30 of all cars follow the rules? One tailed test to the left. Required in Conclusion section of six step process: Critical ratio/Critical value of Z, Confidence interval and p-value. Use examples in this handout to correctly format the test. In Assumption section: Include computations to satisfy normal approximation of binomial distribution by solving np≥10 and n(1-p) ≥10. You will have to compute assumption by hand and type the results of each equation onto your homework

Answer 1

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