A-C

Exercise 9-22 Algo It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 120 feet. A transportation researcher wants to determine if the statement made in the advertisement is false. She randomly test drives 34 small cars at 65 miles per hour and records the braking distance. The sample average braking distance is computed as 115 feet. Assume that the population standard deviation is 20 feet. (You may find it useful to reference the appropriate table: table or table) a. State the null and the alternative hypotheses for the test. MOT-120: NAM 120 Mot 120) 120 Ho! #51207 HAD > 120 b. Calculate the value of the test statistic and the p-value (Negative value should be indicated by a minus sign. Round final ans to 2 decimal places.) answer Test statistic Test statistic Find the p-value. O p-value