Statistical hypothesis testing

The three aspects of temperament that showed a statistically significant correlation with the ToM results from the second wave of testing, were shyness/withdrawal, perceptual sensitivity, and aggression. None of the other tested traits had statistical significant correlation to ToM, but attentional focusing had a positive correlation to the block test and IC, while activity level had a negative correlation to IC. Both shyness/withdrawal and…

However it should be noted that the variable for internal efficacy is skewed heavily to the lower end, and additional categories had sample sizes that were quite small. Thus far, there does not seem to be any statistical support for either hypotheses. Multivariate…

the p-value “defines the smallest value of alpha for which the null hypothesis can be rejected” (p. 312). When we carry out a statistics test, we are testing the hypothesis that the groups are the same (the null hypothesis). If it is determined that there is a p value of 0.05 or lower, than the null hypothesis is rejected and the alternate hypothesis is accepted. Likewise, if the p value is higher than 0.05, the null hypothesis should be accepted and the two groups should be measured to be the…

Effects of Carbohydrate Ingestion Pre- Grip Strength Exercise on Muscle Endurance In the world of fitness, nutritional supplements are ingested with intent to maximize the results of strength exercise. In achieving favorable adaptations to exercise, sufficient nutrient consumption is critical. Also important is the timing of nutrient consumption, as greater benefits are observed when ingestion takes place in a time frame close to the exercise (Laurenson & Dubé, 2014). Previous literature…

purpose of the research is to find out why the staff is unhappy with their jobs, to lower the turnover rate, and make improvements to increase the job quality. The initial information supports the null hypothesis of the high employee attrition rate due to low employee morale. To further verify if the hypothesis is rejected or not rejected, the team analyzed the survey administered to the employees, and the instruments used for data…

important to look for prerequisites that cover the whole landscape and demarcate it into sensible divisions. Reiss (2015) argues that a theory of evidence should be informative about how to gather evidence and when to be justified in believing a hypothesis on the basis of evidence in non-ideal scenarios as well as ideal ones. He puts forward four desiderata for a theory of evidence. It should: (1) be a theory of support; (2) be a theory of warrant; (3) apply to non-ideal scenarios; and (4)…

Discussion The research study had a different outcome than what was expected. There was no significance between a person’s mood state and the type of words recalled. As expected, subjects did recall more positive words more than negative words, but it wasn’t significant. No significance was found between positive mood and the critical positive lure word. Unexpectedly, subjects with a negative mood were more likely to recall a positive lure word. Negative mood and the negative lure word were not…

final trial of 20ºC water results are listed in table 1. The range for the 20ºC water was a difference of 3 lines and the mean was 26.3 lines also shown in table 1. The standard deviation for 20ºC water was 2.08. The t-test concludes that the null hypothesis is false. With respect to the entire class, conclusively the range of the entire group’s data was 22 in 5ºC and 68 in 20ºC. The average number of lines crossed for the entire group in 5ºC water was 5.36 lines and in 20ºC was 43 lines both…

Investigating the effect of cannibalism on light tolerance In this experiment, these people tested whether light tolerance could be transferred through chemical compounds in a species of flatworms. This idea was based off the fact that flatworms could apparently still have memories even if cut in two. What these people wanted to investigate was whether certain "memories" or acquired traits could be retained in a dead worm cut in half and transferred to another worm without the trait being lost.…

Introduction: The null hypothesis was that there is no difference in dissolved oxygen and primary production with depth, the dissolved oxygen amounts will be constant with differences in depth. The alternative hypothesis is that there is a difference in dissolved oxygen and primary production with depth, the dissolved oxygen amounts will decrease as depth increases. Methods: Water samples were incubated in light/dark bottles with no air bubbles in the bottles. DO concentrations…