A data set includes data from 400 random tornadoes. The display from technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.5 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? O A. Ho: H = 2.4 miles O B. Ho: H = 2.4 miles Hy: H = 2.4 miles H1 : H > 2.4 miles Display from Technology O C. Ho: H = 2.4 miles O D. Ho: H = 2.4 miles Hy: H # 2.4 miles Hy: H = 2.4 miles Hypothesis test results: u : Mean of variable Ho : H = 2.4 Identify the test statistic. HA : H > 2.4 (Round to two decimal places as needed.) Variable Sample Mean Std. Err. DF T-Stat P-value Length 2.60684 0.203833 499 1.014752 0.1554 Identify the P-value. (Round to three decimal places as needed.) Print Done State the final conclusion that addresses the original claim. Ho- There is evidence to support the claim that the mean tornado length is greater than 2.4 miles Reject not sufficient Fail to reject sufficientTwelve different video games showing drug use were observed. The duration times of drug use (in seconds) were recorded. When using this sample for a t test of the claim that the population mean is greater than 70 sec, what does df denote, and what is its value? What does df denote? O A. The sample standard deviation O B. The sample size O C. The test statistic O D. The number of degrees of freedom The value of df is (Type an integer or a decimal. Do not round.)