Y5

The chief of the emergency response services claims that their team responds to emergency distress calls within a 5 km radius in 360 seconds, An independent investigator wishes to test whether or not the presence of a thousand extra cars within the 5 km radius affects th emergency response time by 9 54 seconds He randomly selects 100 distress calls and estimates the following regression Y, = 345 +0.23X,, where Y, denotes the predicted response time measured in seconds for the /" emergency call and X, denotes the number of cars (in thousands) on the road within a 5 km radius at the time of the /" emergency call. If /, is the slope coefficient. which of the following options states the investigator's null and alternative hypotheses? O A. Ho /1, > 0.23 and H, P1 50.23 O B. Ho , > 9.54 and Hy , $954 O C. Ho tly = 0.23 and Hy /, # 0.23 O D. Ho , =9.54 and H, 1, #9.54 Suppose associated with the test the investigator wishes to conduct is 1.98 The p-value will be (Round your answer to three decimal places.) If the pre-specified significance level of the test was 5%, the calculated p-value suggests that we the null hypothesis