Question 7 The relationship between two interval variables is graphically displayed by a Question 8 On Saturdays, cars arrive at a car wash at the rate of 6 cars per hour. Using the Poisson distribution, the probability that five or six cars will arrive during the next hour is Question 9 A student who lives far away from the university has to travel to the university by bus on weekdays. He recorded his trips 5 times during the last month. The time in minutes) was 38, 33, 36, 47, and 41. What is the variance for this sample data Question 10 There are different random sampling techniques, which includes simple random sampling, stratifield random sampling, and 4