A highway department executive claims that the number of fatalaccidents which occur in her state does not vary from month tomonth. The results of a study of 158 fatal accidents were recorded.Is there enough evidence to reject the highway departmentexecutive's claim about the distribution of fatal accidents betweeneach month?
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Fatal Accidents 17 10 12 19 9 10 10 12 12 18 17 12
Step 1 of 10: State the null and alternative hypothesis. Step 2of 10: What does the null hypothesis indicate about the proportionsof fatal accidents during each month? Step 3 of 10: State the nulland alternative hypothesis in terms of the expected proportions foreach category. Step 4 of 10: Find the expected value for the numberof fatal accidents that occurred in January. Round your answer totwo decimal places. Step 5 of 10: Find the expected value for thenumber of fatal accidents that occurred in April. Round your answerto two decimal places. Step 6 of 10: Find the value of the teststatistic. Round your answer to three decimal places. Step 7 of 10:Find the degrees of freedom associated with the test statistic forthis problem. Step 8 of 10: Find the critical value of the test atthe 0.1 level of significance. Round your answer to three decimalplaces. Step 9 of 10: Make the decision to reject or fail to rejectthe null hypothesis at the 0.1 level of significance. Step 10 of10: State the conclusion of the hypothesis test at the 0.1 level ofsignificance.
