in order to ensure that there is not a large disparity in the quality of education at various schools in a school district, the school board wants to make sure that the variance of the mean standardized test scores for all students at each school in the district is less than 9. To test this claim, they looked at the mean student scores for the standardized test from a random sample of 12 schools in the district. The results from the survey found that the overall mean was a score of 200.280 with a standard deviation of 2.250. with a 0.01, perform a hypothesis test to determine if the variance is less than 9. Assume that the district standardiazed test scores are normally distributed Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below Ha ta=9 order to ensure that there is not a large disparity in the quality of education at various schools in a school district, the school board wants to make sure that the variance of the mean standardized-test scores for all students at each school in the district is less than 9 To test this claim, they looked at the mean student scores for the standardzed test from a random sample of 12 schools in tthe district The results from the survey found that the overall mean was a score of 200 280 with a standard deviation of 2.250. witha 0.01. perform a hypothesis test to determine if the variance is less than 9. Assume that the district standardized test scores are normaly distributed. Step 2 of Compute the value the test statistic Round your answer to three decimal places In order to ensure that there is not a large disparity in the quality of education at various schools in a school district, the school board wants to make sure that the variance of the mean standardized test scores for all students at each school in the district is less than 9. To test this claim, they looked at the mean student scores for the standardized test from a random sample of 12 schools in the district. The resuts from the survey found that the overall mean was a score of 200.280 with a standard deviation of 2.250. with a 0.01. perform a hypothesis test to determine if the variance is less than 9. Assume that the district standardized-test scores are normally distributed. Step 3 of 3: Draw a conclusion and interpret the decision Answer Tables Keypad Keyboard Shortcuts We reject the null hypothesis and conclude that there is insufficient evidence at a 0.01 level of significance that the variance of the mean standardized-test scores for all students at each school in the district is less than 9. We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.01 level of significance that the variance of the mean standardized test scores for all students at each school in the district is less than 9. We reject the null hypothesis and concude that there is sufficient evidence at a 0.01 level of significance that the variance of the mean standardized-test scores for all students at each school in the district is less than 9 We fall to reject the null hypothesis and conclude that there is sufficient evidence at a 0.01 level of significance that the variance of the mean standardized-test scores for all students at each school in the district is less than 9