Q2 A student measuring how gasoline prices change records th

Q2 A student measuring how gasoline prices change records the cost of gas at 10 randomly selected stations in her hometown. One week? later, she

Again and Again PLEASE DON\'t ANSWER IF YOU ARE NOT SURE 100%

Solution

week 1 - week 2 gives a negative CI => Week 1 has lower mean than week 2 => (C)