Ask Applied Statistics Expert

problem 1: To detect the presence of harmful insects in farm fields, we can put up boards covered with a sticky material and observe the insects trapped on the boards. Which colors attract insects best? Experimenters placed six boards of each of four colors at random locations in a field of oats and measured the number of cereal leaf beetles trapped. Here is the data:

1329_trapped beetels data.jpg

Use a significance level of 10%:

a) Use all the steps of an appropriate statistical method to find out whether there are differences in the means of the number of cereal leaf beetles, in terms of color preference, mainly based on the numbers trapped on the different colored boards.

b) If suitable, carry out post-hoc multiple comparisons of group means. Describe your results. If you choose to not conduct post-hoc tests, describe why.

c) State any suppositions you have made and assess whether these are met with this data.

problem 2: We think of DNA as the stuff which stores the genetic code. This turns out that DNA takes place mainly outside living cells, on the ocean floor. It is significant in nourishing seafloor life. Scientists think that this DNA comes from organic matter which settles to the bottom from the top layers of the ocean. Phytopigments that come mainly from algae are a measure of the amount of organic matter which has settled to the bottom. The file “dna_oceanfloor.jmp” contains data on concentrations of DNA and phytopigments (that is, both in grams per square meter) in 116 ocean locations around the world. Does the data give good reason to think that Phytopigments concentration helps to elucidate DNA concentration?

a) Using a suitable graphical display, describe the relationship between DNA and phytopigments.

b) Fit a regression line to the data. prepare down the equation of model and interpret all the parameters in the model.

c) Test the hypothesis of no linear relationship among DNA and phytopigments. Illustrate all the steps.

d) Using JMP, obtain 95% confidence intervals for intercept and slope. Interpret.

e) Critically assess the model. Does your assessment propose any problems with the fitted regression model?

f)  Predict the DNA concentrations when Phytopigments concentration equals to 0.07 gr/m2 and 0.09 gr/m2 correspondingly.

Applied Statistics, Statistics

  • Category:- Applied Statistics
  • Reference No.:- M9473

Have any Question? 


Related Questions in Applied Statistics

Question onea a factory manager claims that workers at

QUESTION ONE (a) A factory manager claims that workers at plant A are faster than those at plant B. To test the claim, a random sample of times (in minutes) taken to complete a given task was taken from each of the plant ...

You are expected to work in groups and write a research

You are expected to work in groups and write a research report. When you work on your report, you need to use the dataset, and other sources such as journal articles. If you use website material, please pay attention to ...

Assignment -for each of the prompts below report the

Assignment - For each of the prompts below, report the appropriate degrees of freedom, t statistic, p-value and plot using the statistical software platform of your choice (R/STATA) 1) A sample of 12 men and 14 women hav ...

Assignment - research topicpurpose the purpose of this task

Assignment - Research topic Purpose: The purpose of this task is to ensure you are progressing satisfactorily with your research project, and that you have clean, useable data to analyse for your final project report. Ta ...

Assessment task -you become interested in the non-skeletal

Assessment Task - You become interested in the non-skeletal effects of vitamin D and review the literature. On the basis of your reading you find that there is some evidence to suggest that vitamin D deficiency is linked ...

Part a -question 1 - an analyst considers to test the order

PART A - Question 1 - An analyst considers to test the order of integration of some time series data. She decides to use the DF test. She estimates a regression of the form Δy t = μ + ψy t-1 + u t and obtains the estimat ...

Medical and applied physiology experimental report

Medical and Applied Physiology Experimental Report Assignment - Title - Compare the working and spatial memory by EEG. 30 students were tested (2 memory games were played to test their memory - a card game and a number g ...

Business data analysis computer assignment -part 1

Business Data Analysis Computer Assignment - PART 1 - Economists believe that high rates of unemployment are linked to decreased life satisfaction ratings. To investigate this relationship, a researcher plans to survey a ...

Question - go to the website national quality forum nqf

Question - Go to the website, National Quality Forum (NQF), located in the Webliography, and download the article by WIRED FOR QUALITY: The Intersection of Health IT and Healthcare Quality, Number 8, MARCH 2008. You are ...

Go to the webliography source for the national cancer

Go to the Webliography source for the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) Program. In the Fast Stats, create your own cancer statistical report, "Stratified by Data Type," and u ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As