Null hypothesis

(Wilson et al., 2015) The null hypothesis for pH is pH does not have an effect on the rate for the enzyme to function. The alternative hypothesis is pH does have an effect on the rate of the enzyme to work. For most enzymes in a human body, the pH is near 7.0, which is neutral (Wilson et al., 2015). Both temperature and pH have an optimum for max activity. At this point the enzyme has produced the large amounts of energy also making it extremely effective. The null hypothesis for the temperature…

electoral system in the dataset. By looking at the sig. level of the first five independent levels is less than 5% of the 95% confidence interval therefore we fail to reject the null hypothesis. Looking at the last three variables which are greater than 5% (.05) of the 95% confidence interval therefore we must accept the null hypothesis. There is a negative effect of voter turnout by -2.6% on the electoral system while voting age population have a very small negative effect on the systems. The…

investigates the outcome of frequent alcohol use on memory, by comparing the performance of subjects with different alcohol use frequency on the picture memory test. The null hypothesis for this experiment is that people who use alcohol weekly and who use alcohol monthly perform the same in the picture memory test. The alternative hypothesis is that people who consume alcohol…

A possible result in my experiment that would not reject my null hypothesis would be if there was no distinct pattern of mating between females and males with long and short horns and females actually mated equally with males of longer and shorter horns. Possible results of my experiment that would reject my null hypothesis would be if females preferred to mate with males of one specific horn length over the other. Therefore, males with longer…

of diversity trainings. Research and null hypotheses The research hypothesis is that the cultural competence score is related to the respondents attending diversity training. Emily expects to see an increase in cultural competence in the group attending the diversity training compared to the group that did not attend diversity training. Diversity training has an impact on the level of cultural competence of employees. When the hypotheses are tested, the null hypotheses have no statistical…

of the cheek patches of the Palm Cockatoo. Predictions: Null hypothesis- Colour of cheek patches do not affect the ability of Palm Cockatoo to be chosen as a mate. There are 2 predictions- The number of copulations received by all 3 groups of males are the same. Thus null hypothesis is not rejected. The number of copulations received by the red cheeked Cockatoos are higher than those of the other two groups of males. The null hypothesis is then rejected. The number of copulations received…

the rate of heal and different treatments of a selection of peptic ulcer patients who have similar symptoms to prove rate of heal is dependent on treatments. To do this, I will conduct a chi-squared (χ2) test and establish two hypotheses: the null hypothesis, that the two factors, rate of heal and…

again mouth with the drinking water provided for the next step. 7. Provide each student with a 1-inch strip of black licorice candy and have each student taste the black licorice. 8. Record whether each student perceives a bitter, sweet or nothing (null) taste by asking if he or she like or dislike the black licorice in the chart. Calculate necessary calculations with recorded data to perform a chi-square test to determine if there is a significant correlation between PTC tastes and black…

A hypothesis is determined true or false by experiment. First of all, two hypotheses need to be formulated. Then an experiment is conducted, which then ends up accepting one or the other. Example There is a hypothesis that community pharmacists can improve patient adherence by phoning up the patient a week after they receive the prescription and giving advice. This is known as the alternative hypothesis (H1). There must have a different hypothesis to test it against, and this…

EXPERIMENT #2 – ACTION SPECTRUM: FLOATING SPINACH DISK: Hypothesis: I hypothesized that the colored light will produce the most photosynthetic activity due to the larger wavelenth Null Hypothesis: For my null hypothesis I stated that there would be no effect of different colored light on photosynthetic…