Question 13 (0.6 points) ' 1)) Listen } ' You plan to conduct a study of the effect of sun exposure on mood. You will compare a group that agrees to avoid all sun exposure for 1 month to a group that will sunbathe for 30 min 5 days per week for 1 month. You expect scores on a measure of positive mood to be higher in the sunbathing group than in the sun-avoidant group Your alternative statistical hypothesis is k7,}. 1) \"sun ' HNOSUI'I > 0 2) \"mood ' \"sun > 0 VI 3) \"good mood ' \"bad mood > 0 4) \"sun ' lJ-mood > 0 Question 14 (0.6 points) ' 1)) Listen } ' You plan to conduct a study of the effect of therapy dog presence on test anxiety. You will compare grades on an exam for which no dog was present to grades on an exam for which a trained therapy dog was slowly circulating around the room, allowing students who so desired to pet it. You expect the students with the dog present to report lower test anxiety, but it is possible that it could make their anxiety even worse, so you plan to conduct a two-tailed test. Your alternative statistical hypothesis is \\_' 1) Hdog absent ' lidog present '1' 0 2) \"hi anxiety ' Hlow anxiety at 0 \\J 3) \"dog ' \"test anxiety 1" O Question 15 (0.6 points) ' 1)) Listen } ' You plan to conduct a study of the effect of a new dietary supplement on adult height. You plan to conduct a one-tailed test comparing a single sample of people who take the supplement to the known heights of people who have never taken the supplement (because it didn't exist previously). The mean height in the population from which your sample was recruited was 68.6 inches. Your alternative statistical hypothesis is i.--) 1) \"adults > 68'6 2) \"supplement > 0 i.-.) 3) \"supplement > 68'6 U 4) uheight > 68.6 Question 16 (0.6 points) l 1)} Listen b l You plan to conduct a study of the effect of a time management program on GPA. You plan to conduct a two-tailed test comparing a single group of students who take the program to a population of students who have never taken a time management program. The mean GPA in the population from which your sample was recruited was 2.77. Your alternative statistical hypothesis is ll \"students at 2-77 2) \"TMprogram 3* 2-77 'v'l 4) HTMprogram 3' 0 Question 17 (0.6 points) ' 1:) Listen } ' You plan to conduct a study of the effect of taking a 5-minute break to walk each hour during the work day on body weight. You will compare a group that takes walking breaks for 1month to a group that does not. You expect weight to be lower in the walking group than in the control group, and you plan to conduct a one-tailed test. Your null statistical hypothesis is 1) \"walk ' uNowaIk > 0 2) \"walk ' IJ-NoWalk 0