Integrated Investigation Results

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TTest Practice

Use a T Test and the following data to address the four questions below for EACH scenario.
What would be the null hypothesis in this study? Life satisfaction between old and young falk is the same Zappin' Rats between Stimulation and No Stimulation Hot Dog Cateries between Poultry and Beef
What is the result of the ttest? 0.0004736633 0.4987301242 0.0001136518
Is there a statistically significant difference between the two groups? Yes, because 0.00047<0.05 No, because 0.498730124>0.05 yes, because 0.000114<0.05
Interpret your answer. old falks and young falks have different life statisfaction stimulation and no stimulationb in food intake in rats. Beef and Poultry have different calories.
Life Satisfaction
TDSchmalz: TDSchmalz: http://faculty.webster.edu/woolflm/ttest.html		 Zappin' Rats
TDSchmalz: TDSchmalz: http://faculty.webster.edu/woolflm/ttest.html		 Hot Dog Calories
TDSchmalz: TDSchmalz: http://www.statstutor.ac.uk/resources/uploaded/unpaired-t-test.pdf
A research study was conducted to examine the differences between older and younger adults on perceived life satisfaction. A pilot study was conducted to examine this hypothesis. Ten older adults (over the age of 70) and ten younger adults (between 20 and 30) were give a life satisfaction test (known to have high reliability and validity). Scores on the measure range from 0 to 60 with high scores indicative of high life satisfaction; low scores indicative of low life satisfaction. The data are presented below. Compute the appropriate t-test. A researcher hypothesizes that electrical stimulation of the lateral habenula will result in a decrease in food intake (in this case, chocolate chips) in rats. Rats undergo stereotaxic surgery and an electrode is implanted in the right lateral habenula. Following a ten day recovery period, rats (kept at 80 percent body weight) are tested for the number of chocolate chips consumed during a 10 minute period of time both with and without electrical stimulation. The testing conditions are counter balanced. Compute the appropriate t-test for the data provided below. (Data taken from Moore and McCabe – Introduction to the Practice of Statistics) A U.S. magazine, Consumer Reports, carried out a survey of the calorie and sodium content of a number of different brands of hotdog. There were three types of hotdog: beef, ’meat‘ (mainly pork and beef but can contain up to 15% poultry) and poultry. The results below are the calorie content of the different brands of beef and poultry hotdogs.
Age Score No Stimulation 8 Beef 190
20 26 No Stimulation 7 Beef 190
21 15 No Stimulation 4 Beef 186
21 34 No Stimulation 14 Beef 184
21 36 No Stimulation 6 Beef 181
22 22 No Stimulation 7 Beef 176
25 27 No Stimulation 12 Beef 175
26 19 No Stimulation 5 Beef 158
26 37 No Stimulation 5 Beef 157
29 24 No Stimulation 8 Beef 153
30 41 Stimulation 12 Beef 152
70 45 Stimulation 7 Beef 149
70 48 Stimulation 3 Beef 149
71 25 Stimulation 11 Beef 148
71 38 Stimulation 8 Beef 141
72 52 Stimulation 5 Beef 139
73 39 Stimulation 14 Beef 135
73 46 Stimulation 7 Beef 132
78 46 Stimulation 9 Beef 131
79 55 Stimulation 10 Beef 111
80 51 Poultry 170
Poultry 152
Poultry 146
Poultry 144
Poultry 143
Poultry 142
Poultry 135
Poultry 132
Poultry 129
Poultry 113
Poultry 106
Poultry 102
Poultry 102
Poultry 99
Poultry 94
Poultry 87
Poultry 86

TTest Study

Using SOME of the data from the "Student Demographic Data" GoogleSheet, address the following prompts: Copy-Paste ONLY the columns of data that you need from the GoogleSheet to the right Which food people like more ? Number of people
What is you hypothesis? Pepole that like Junk food than the other like natural food. Junk Food 8
Junk Food 7
What is your null hypothesis? People like difference Between junk and natural food. Junk Food 20
Junk Food 14
What is your independent variable? junk and natural food Junk Food 6
Junk Food 17
Do you have multiple dependent variables? No Junk Food 12
Junk Food 5
What is/are your dependent variable(s)? Number of people Junk Food 15
Junk Food 8
What is the numerical result of your Ttest? 0.0073918565 Junk Food 12
Junk Food 7
Is there a statistically significant difference between the two groups? Yes, because 0.007391857<0.5 Junk Food 3
Natural Food 2
Interpret your answer. Different people likes different food. Natural Food 1
Natural Food 0
Natural Food 5
Natural Food 7
Natural Food 9
Natural Food 3
Natural Food 10
Natural Food 11
Natural Food 4
Natural Food 5
Natural Food 8
Natural Food 5
Natural Food 7