Question: Please answer all 3 parts and show full work for all of them Researchers measured the diameters of 22 trees in a central Amazon rain

Please answer all 3 parts and show full work for all of them

Researchers measured the diameters of 22 trees in a central Amazon rain forest. They also used Carbon-dating to determine the age of each tree. After checking all relevant assumptions, they calculated a Pearson correlation coefficient of r= 0.67 for the age of the trees compared to their diameter.

Given: Critical value = 2.086.

a) Calculate the 95% confidence interval for the correlation coefficient for this population of trees.

b) Given your answer to part (a), is there a significant linear relationship between age and diameter for these trees?Why/why not?

c) The researchers find that the trees had a mean age or 17.2 years, with a standard deviation of 4.9 years. The diameters had a mean of 23.3cm, with a standard deviation of 5.3cm. Assuming all relevant assumptions were met, calculate the OLS linear regression equation for predicting tree age based on diameter. Write the full equation, defining any variables used.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

DeWalden Resources Inc. plans to issue $30,000,000 of 10-year debt in September, and the chief financial officer is concerned that interest rates will rise over the next 6 months until the debt is...

1. Researchers measured the diameters of 22 trees in a central Amazon rain forest. They also used Carbon-dating to determine the age of each tree. After checking all relevant assumptions, they...

19 Name: ____________________________________ 1. Your friend has a credit card with an APR of 49.9% ! What would his finance charge be on a $500 charge for just 1 month? 2. Your friend has 2 credit...

STAT 2263 - UNB Online College of Extended Learning, University of New Brunswick Assignment #2: Probability Instructions: Students are advised to submit this assignment within 2 months of their...

I have a attached a copy of the data used to answer the question Prepare a 2007 classified balance sheet and multistep income statement. Use the account balances from the unadjusted trial balance and...

Please answer the question according to the case study of Kingston Family Vineyard no generalization: Which of the investment alternatives would you recommend for Kingston Family Vineyard and why How...

Hi, I'm having an issue with this Simnet project and I was wondering if anyone could help me. There is only one issue: Step 3a, in the instruction pdf that I have attached. When my project is graded...

Case Study #4: Ikea in Russia: Emerging Market Strategies and Ethical Dilemmas The Case Study can be found in your textbook. The case is titled Ikea in Russia: Emerging Market Strategies and Ethical...

Answer the following questions according to the case (Supply Chain Management in STARBUCKS and its Impact on Company Performance) provided below the asked questions: What are the main issues that...

Please read the article and help me answer this questions. Thank you. Growth Strategy #1 : Walmart pursued a growth strategy of building out their e-commerce operations. Summarize what they...

this is the questionplease help me thanksits a project about renovation one level of a building. project management case . This is a renovation project On the basis of group work as a personal...

The point of this problem is to demonstrate the type of puzzles that must be solved in the design of malicious code and, therefore, the type of mindset that one wishing to counter such attacks must...

(A): Estimate the approximate amount of domestic solid waste to be generated in the coming10-years (2019-2028) for future planning for solid waste management and land in a tourist country. The...

Exercise II . ( Total mark: 5 points ) . Consider two firms, A and B . Firm A can borrow money at a floating rate equal to EURIBOR \ ( + 3 \ % \ ) or at a fixed rate of \ ( 1 6 \ % \ ) . Firm B can...

Gnomes R Us az nce hisse bana 1,93 dolar temett dedi. irketin temett datma oran yzde 40. PE oran 17,2 kat ise hisse senedi fiyat nedir?

2-15 Describe the Information systems and IT infrastructure at Income after migrating to the fully digital system. NTUC Income (Income), one of Singapores largest insurers, has over 2 million policy...

2-17 How well is Income prepared for the future? Are the problems described in the case likely to be repeated? NTUC Income (Income), one of Singapores largest insurers, has over 2 million policy...

2-16 What benefits did Income reap from the new system? NTUC Income (Income), one of Singapores largest insurers, has over 2 million policy holders with total assets of S$31.3 billion. The insurer...