Auto insurance companies are beginnning to consider raising rates for those who use mobile phones while driving. A consumer group claims that only 15% of drivers use mobile phones. The insurance industry conducts a study and finds that among 500 randomly selected drivers, 90 use mobile phones. At 0.05 level of significance, test the group's claim. (1) State the hypotheses. (2) Check the assumptions of the test and compute the test statistic (Round your answer to three decimal place). (3) Find the p- value: (Round your answer to three decimal place). (4) Make a decision and state the conclusion.

Auto insurance companies are beginnning to consider raising rates for those who use mobile phones while driving. A consumer group claims that only 15% of drivers use mobile phones. The insurance industry conducts a study and finds that among 500 randomly selected drivers, 90 use mobile phones. At 0.05 level of significance, test the group's claim. (1) State the hypotheses. (2) Check the assumptions of the test and compute the test statistic (Round your answer to three decimal place). (3) Find the p- value: (Round your answer to three decimal place). (4) Make a decision and state the conclusion.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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