Do people walk at different speeds in different parts of the world. A researcher randomly selects 50 pedestrians in Vancouver, 50 in Tokyo, 50 in Durban and 50 in Moscow and times how long it takes each person to walk 400 yards. What is the value of N and how many factors are in this experiment? Select one: O a. 50, 4 O b. 400,1 OC. 4,2 O d. 200,1

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