Example: Two friends went bowling all day. They each bowled 12 games on the same lane. They wanted to determine if there is a difference in their mean scores for all games they would bowl. Ha: pd : 0 t = 0.93 n = 12 p-value = 0.3723 Decision 9 Example: The price of unleaded gas was recorded on Monday at 30 randomly selected gas stations and then again on Friday at the same gas stations to determine if the mean price was lower on Monday for all gas stations. Ha: pd 0 t = 1.54 n = 45 p-value = 0.0654 Decision 9 Back to the gum example, let's determine if there is a difference in the mean avor lasting time between the two brands of gum for all GVSU students. Ha: pd :9 0 t = 3.09 n = 13 p-value = 0.0046 Decision 9