Mathematics, 21.04.2020 00:35, klu65
A recent study1 examined the relationship of football and concussions on hippocampus volume in the brain. The study included three groups with n=25 in each group: healthy controls who had never played football, football players with no history of concussions, and football players with a history of concussions. In this exercise, we test for evidence that average brain size is larger in football players who have never had a concussion (FBNoConcuss) than in football players with a history of concussions (FBConcuss). The data are in FootballBrain where the variable Hipp measures brain size as the volume of the hippocampus (in ml) for each subject.
Let group 1 be the football players with no concussion and group 2 be the football players with a history of concussions.
(a) State the null and alternative hypotheses.
(b) Use StatKey or other technology to find the value of the relevant sample statistic. Round your answer to one decimal place.
(c) Use StatKey or other technology to find the p-value. Round your answer to three decimal places.
(d) Does it appear that this difference in brain size is just due to random chance?
Answers: 2
Mathematics, 21.06.2019 19:20, hahah265
Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?
Answers: 3
Mathematics, 21.06.2019 19:30, MariaIZweird7578
Combine the information in the problem and the chart using the average balance method to solve the problem.
Answers: 2
Mathematics, 21.06.2019 22:30, jcazares3558
Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?
Answers: 2
A recent study1 examined the relationship of football and concussions on hippocampus volume in the b...
Arts, 25.11.2021 16:00
English, 25.11.2021 16:00
Mathematics, 25.11.2021 16:00