Wilcoxon Rank Sum Test Wilcoxon Signed Rank Test Paired T-Test Wilcoxon Rank Sum Test Wilcoxon Signed Rank Test Mann-Whitney Test Paired T-Test Wilcoxon Rank Sum Test Wilcoxon Signed Rank Test...

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

Paired T-Test

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

Mann-Whitney Test

Paired T-Test

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

Mann-Whitney Test

Paired T-Test

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

Mann-Whitney Test

Paired T-Test

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

Mann-Whitney Test

Paired T-Test

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

Mann-Whitney Test

Paired T-Test

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

Mann-Whitney Test

Paired T-Test

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

Mann-Whitney Test

Paired T-Test

Wilcoxon Rank Sum Test

Wilcoxon Signed Rank Test

In Ecological Engineering, the potential for floating aquatic plants to treat dairy manure wastewater was investigated. For one part of the study, 16 treated wastewater samples were randomly divided into two groups- a control algal was cultured in half the samples and the water hyacinth was cultured in the other half. The rate of increase in the amount of total phosphorus was measured in each water sample. The control algal had a sample mean of 0.036 with a standard deviation of 0.008 while the water hyacinth had a sample mean of 0.026 with a standard deviation of 0.006. Conduct a test to determine if there is a difference in mean rates of increase of total phosphorus for the two aquatic plants. Use alpha = 0.05.A.
What type of test should be conducted?B.Is there sufficient evidence to conclude that there is a difference between the mean rate of increase of total phosphorus of the control algal and the water hyacinth? Use alpha = 0.05. Explain in one sentence.C. state the null hypothesis and alternative hypothesisD, should the null hypothesis rejected or accepted?E. What is the observed value and what is the critical value? state the p value?






























second questionA
















researcher was interested in stress levels of lecturers during lectures. She took the same group of 8 lecturers and measured their anxiety (out of 15) during a normal lecture and again in a lecture in which she had paid students to be disruptive and misbehave. The data were not normally distributed. Which test should she use to compare her experimental condition?