subject
Mathematics, 15.04.2021 14:00 nady82

Erin wants to know if warming up will help runners sprint faster. Twenty-six track and field athletes volunteered to participate in her study. She randomly assigns 13 athletes to warm-up for 10 minutes. All 26 participants sprint the same distance. She calculates the mean for each group and determines that the mean for the warm-up group was 10.9 seconds, and the mean for the other group was 12.9 seconds. To test the difference of means she re-randomized the data 54 times, and the differences are plotted in the dot plot below. What can Erin conclude from her study? (6 points) A dot plot is shown labeled from negative 2.5 to positive 2. Above the negative 2.5 are 3 dots. Above the negative 2 are 6 dots. Above the negative 1.5 are 9 dots. Above the negative 1 are 12 dots. Above the negative 0.5 are 6 dots. Above the 0.0 are The difference in the means is not significant because a difference of 2 is not very likely. The difference in the means is not significant because a difference of 2 is very likely. The difference in the means is significant because a difference of 2 is very likely. The difference in the means is significant because a difference of 2 is not very likely.

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 17:30
Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys
Answers: 2
question
Mathematics, 21.06.2019 19:10
At a kentucky friend chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. if 2,400 people responded to the survey, how many people preferred regular chicken?
Answers: 1
question
Mathematics, 21.06.2019 19:20
Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)
Answers: 1
question
Mathematics, 21.06.2019 20:00
Graph the linear function using the slooe and y intercept
Answers: 2
You know the right answer?
Erin wants to know if warming up will help runners sprint faster. Twenty-six track and field athlete...
Questions
question
Mathematics, 08.09.2021 23:10