Test Of Dispersion Of Oak Trees

1. Use the graph below to predict what the results will look like if the null hypothesis is

Confidence intervals were performed for each color. The confidence interval determines the parameter of the population

2) Compute the standard deviation for each of the four samples. Does the assumption of .21 for the population standard deviation appear reasonable?

·  Compare the measurements in the study with the standard normal distribution, what does this tell you about the data?

Under Ho, the average proportion is: p= x/n = 48/450 = 0.10666. If H0 is true then we would expect the expected frequencies for each type of residences to be: fei = 0.10666*column total. Using PHStat, the expected frequencies are computed and used to evaluate the test statistic.

4. Calculate the following measures of central tendency for the set of cube measurement data. Show your work or explain your procedure for each.

7. Question : In a frequency distribution such as a bell-shaped curve, what does the vertical height of the curve indicate?

Short Answer Writing Assignment – Both the calculated binomial probabilities and the descriptive statistics from the class database will be used to answer the following questions.

Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.

18. Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z scores:

3. In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject.

8. Review the following frequency distribution. Create a histogram either by hand or by using some other

10. To analyze your data, you will need to learn how to use the Chi-Square Test. The Chi-Square Test (pronounced kahy) will be a part of your lab exam.

A field researcher is gathering data on the trunk diameters of mature pine and spruce trees in a certain area. The following are the results of his random sampling. Can he conclude, at the .10 level of significance, that

In Area 2, the species with the highest dominance value was the Oregon White Oak (70.6%). Oregon White Oaks provide shelter, housing, and food to various animals as well. Diversity of birds is often higher in Oregon White Oaks than in an adjacent coniferous forest. Using the dominance data, it tells us that at this moment in time Oregon Oak and