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SS = 160 2098 Use an independent-measures t test with a two-tailed, to determine whether there is a significant ifference between the two types of high school student. bol = .01, 15 8. Does posting calorie content for menu items affect npeople's choices in fast-food restaurants? According to results obtained by Elbel, Gyamfi, and Kersh (2011), the answer is no. The researchers monitored the calorie content of food purchases for children and adolescents in four large fast-food chains before and after mandatory labeling began in New York City. Although most of the haadolescents reported noticing the calorie labels, appar- ho ently the labels had no effect on their choices. Data simi- lar to the results obtained show an average of M = 786 || calories adolescents before the labeling, compared to an average of M = 772 calories withs= 91 for a similar sample of n = 100 children after the mandatory posting. per meal with s = 85 for n = 100 children and %3D %3D a. Use a two-tailed test with a = .05 to determine whether the mean number of calories after the posting is significantly different than before calorie content was posted. b. Calculate r to measure effect size for the mean d difference. 9. A long history of psychology research has demon- strated that memory is usually improved by studying material on multiple occasions rather than one time only. This effect is commonly known as distributed еcent papрer exam- 8. a Step I HoiMater - Moeton = 0 after - M befon = 0 HaiMater- Mbefre 0 Stap 2. dfir 99 dfa-99 dfaew 198 total L=0,05.The critical value > tl980 Step 3: 3,=(85)*- h-1 99 3==(1) 5=83.65 99 12.98+83.65 2. =0.19 99+99 2. Sm, 1-M2) 0.0158 i. (Mi-M_)-(Mi-M) 186-112 t: 986-192 Scminma) 0.0158

SS = 160 2098 Use an independent-measures t test with a two-tailed, to determine whether there is a significant ifference between the two types of high school student. bol = .01, 15 8. Does posting calorie content for menu items affect npeople's choices in fast-food restaurants? According to results obtained by Elbel, Gyamfi, and Kersh (2011), the answer is no. The researchers monitored the calorie content of food purchases for children and adolescents in four large fast-food chains before and after mandatory labeling began in New York City. Although most of the haadolescents reported noticing the calorie labels, appar- ho ently the labels had no effect on their choices. Data simi- lar to the results obtained show an average of M = 786 || calories adolescents before the labeling, compared to an average of M = 772 calories withs= 91 for a similar sample of n = 100 children after the mandatory posting. per meal with s = 85 for n = 100 children and %3D %3D a. Use a two-tailed test with a = .05 to determine whether the mean number of calories after the posting is significantly different than before calorie content was posted. b. Calculate r to measure effect size for the mean d difference. 9. A long history of psychology research has demon- strated that memory is usually improved by studying material on multiple occasions rather than one time only. This effect is commonly known as distributed еcent papрer exam- 8. a Step I HoiMater - Moeton = 0 after - M befon = 0 HaiMater- Mbefre 0 Stap 2. dfir 99 dfa-99 dfaew 198 total L=0,05.The critical value > tl980 Step 3: 3,=(85)*- h-1 99 3==(1) 5=83.65 99 12.98+83.65 2. =0.19 99+99 2. Sm, 1-M2) 0.0158 i. (Mi-M_)-(Mi-M) 186-112 t: 986-192 Scminma) 0.0158

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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SS = 160 2098 Use an independent-measures t test with a two-tailed, to determine whether there is a significant ifference between the two types of high school student. bol = .01, 15 8. Does posting calorie content for menu items affect npeople's choices in fast-food restaurants? According to results obtained by Elbel, Gyamfi, and Kersh (2011), the answer is no. The researchers monitored the calorie content of food purchases for children and adolescents in four large fast-food chains before and after mandatory labeling began in New York City. Although most of the haadolescents reported noticing the calorie labels, appar- ho ently the labels had no effect on their choices. Data simi- lar to the results obtained show an average of M = 786 || calories adolescents before the labeling, compared to an average of M = 772 calories withs= 91 for a similar sample of n = 100 children after the mandatory posting. per meal with s = 85 for n = 100 children and %3D %3D a. Use a two-tailed test with a = .05 to determine whether the mean number of calories after the posting is significantly different than before calorie content was posted. b. Calculate r to measure effect size for the mean d difference. 9. A long history of psychology research has demon- strated that memory is usually improved by studying material on multiple occasions rather than one time only. This effect is commonly known as distributed еcent papрer exam-
Transcribed Image Text:SS = 160 2098 Use an independent-measures t test with a two-tailed, to determine whether there is a significant ifference between the two types of high school student. bol = .01, 15 8. Does posting calorie content for menu items affect npeople's choices in fast-food restaurants? According to results obtained by Elbel, Gyamfi, and Kersh (2011), the answer is no. The researchers monitored the calorie content of food purchases for children and adolescents in four large fast-food chains before and after mandatory labeling began in New York City. Although most of the haadolescents reported noticing the calorie labels, appar- ho ently the labels had no effect on their choices. Data simi- lar to the results obtained show an average of M = 786 || calories adolescents before the labeling, compared to an average of M = 772 calories withs= 91 for a similar sample of n = 100 children after the mandatory posting. per meal with s = 85 for n = 100 children and %3D %3D a. Use a two-tailed test with a = .05 to determine whether the mean number of calories after the posting is significantly different than before calorie content was posted. b. Calculate r to measure effect size for the mean d difference. 9. A long history of psychology research has demon- strated that memory is usually improved by studying material on multiple occasions rather than one time only. This effect is commonly known as distributed еcent papрer exam-
8. a Step I HoiMater - Moeton = 0 after - M befon = 0 HaiMater- Mbefre 0 Stap 2. dfir 99 dfa-99 dfaew 198 total L=0,05.The critical value > tl980 Step 3: 3,=(85)*- h-1 99 3==(1) 5=83.65 99 12.98+83.65 2. =0.19 99+99 2. Sm, 1-M2) 0.0158 i. (Mi-M_)-(Mi-M) 186-112 t: 986-192 Scminma) 0.0158
Transcribed Image Text:8. a Step I HoiMater - Moeton = 0 after - M befon = 0 HaiMater- Mbefre 0 Stap 2. dfir 99 dfa-99 dfaew 198 total L=0,05.The critical value > tl980 Step 3: 3,=(85)*- h-1 99 3==(1) 5=83.65 99 12.98+83.65 2. =0.19 99+99 2. Sm, 1-M2) 0.0158 i. (Mi-M_)-(Mi-M) 186-112 t: 986-192 Scminma) 0.0158
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