Probability and statistics

1. The pH of Welch’s Juice Significantly different than what I had hypothesized. I reject that part of my hypothesis because I feel like it was too far from what the actual number was. I had hypothesized 6 because I felt like the other parts of that solution would make it less acidic. I was wrong and the actual number was 3. On the other solutions I was exactly on or off by one number. 2. The pH range of my solutions were from 2.5-7.The most acidic solution I had was vinegar which had a pH of…

To begin with, the frequency tables show the number of participants and what they answered for both the scale of income and state of health can been seen in Figure [1] of the Appendix. There were 83,154 participants that responded to the wealth question [1] and 85,949 participants that responded to the health question [Figure 2]. For the wealth question, the frequency of the data from the respondents is skewed toward the First Step at 6483 people (lowest wealth), peaks toward the Fifth Step at…

the nondominant hand, we measured an average of 21.25 kg for maximum clench strength before fatigue, an average of 19.75 after fatigue, an average of 35.25 seconds for clench duration before fatigue, and an average of 29 seconds after fatigue. The statistics on collected data indicated that when it came to the maximum grip strength, there was no significant difference before or after the arm muscles had been fatigued, or between the dominant and nondominant hands. In addition, the results also…

The purpose of this study is to evaluate the impact of interventions designed to reduce hospital admissions or length of stay amongst frail older people. Databases that were used to retrieve the studies are: PubMed / Medline, PsycINFO, CINAHL, BioMed Central, Kings Fund library. Studies were limited to publications from period 2007- present. Researchers classified interventions into those which aimed to prevent admission, interventions in hospital, and those which aimed to support early…

tbl=table(GoldStrip(1:end-1),slopeL(1:end-1,1:1),slopeL(1:end-1,2:2),slopeL(1:end-1,3:3),RawRet(2:end)); mdl = fitlm(tbl); Predicted_RawRet = mdl.Fitted; Predicted_RawRet=[0;Predicted_RawRet]; % Print Regression Statistics disp('Term - Regression Results'); [mdl.Coefficients.Estimate mdl.Coefficients.tStat] fprintf('\nThe Adjusted R-squared is %0.2f percent\n', 100*mdl.Rsquared.Adjusted); Term - Regression Results ans = 0.0078 1.0945 -0.0000…

2. There is a good, positive correlation between the six variables in the HC scale. The Cronbach Alpha is .769. From looking at the Inter-Item Correlation if I delete any variable the Cronbach Alpha will go down so there is no need to delete anything. The SE scale Cronbach Alpha was .686, after looking at the Inter-item Correlation chart all of the variables were positive but there were a few variable that were low. If I was to delete any variable the Cronbach Alpha would decrease. So the…

Joseph performance on the attention tasks during this testing exhibited variability. Joseph’s performance on visual attention task was below the threshold of statistical significance; however, it did demonstrate subtle difficulties in the area of detectability, inattention, response speed consistency. He also made slightly more anticipatory errors than others in his age group. There was slight reduction of speed noted during the later blocks. His response speed also showed slight decrease when…

lot on how statistics is involved in our everyday life. We also have learned why statistic is useful in comparing things. In our book Naked Statistics by Charles Wheelan we read some chapters in where we use stats in three different ways to get close to the answer without using all the data. We see how indepednt variables and dependent variables relate to each other and how we can get close to seeing how close they relate without using the full data. Correlation is a form of statistics in…

Bullfrog Dissection Background The American bullfrog, Lithobates catesbeianus, is an amphibian about the size of a teacup.(National Geographic, “American Bullfrog”). This dissection explored the anatomy of a bullfrog that had been pithed. Pithing is a technique used to prevent the frog from experiencing any cruel or unusual pain during the dissection. A pithed frog has had its nervous tissue in its brain severed thus allowing it to maintain normal bodily function during the dissection without…

Analysis: Initially after I received my results from the GMI survey I was surprised by their outcome. Being a Global Studies major, I thought that my overall averages would have been significantly higher than they were. However, after reading through the aspects of each individual section, and a close inspection of myself in regards to the requirements to those sections I began to understand the reasoning behind my scores. When I first started assessing my GMI results, I expected my scores to…