Biology ROCKS!

Problem 2 Description [10 + 24 = 34 points]: The accompanying data resulted from a fabric flammability study. Four randomly selected specimens from three different fabrics were tested to determine their burn times. Perform appropriate analysis to determine which Fabric gives the best performance at 0.04 level of significance. Specimen Fabric 1 Fabric 2 Fabric 3 1 17.8 11.8 13.9 2 16.2 11 10.8 3 15.9 9.2 12.8 4 15.5 10 11.7                   2a) Copy-Paste your Excel Report in the box under this question. [10 points].   Answer the following questions (Questions 2 through 14) for the remaining 24 points.   Attaching an Excel report/file alone is not sufficient to earn all the points. You must demonstrate your understanding and ability for utilizing the report to answer specfic questions below to earn points.   You will earn these points ONLY  if I see you actually work (and NOT pretend to work) in EXCEL in your Honorlock recording and your answers for the questions match with your answers with your Excel report. If I do not see you work in Excel and if I do not see you use Excel functions and formulas (wherever relevant) in the Honorlock recording OR your answers in Excel and the Exam do not match, you will earn Zero points.

A species of ant protects aphids from predators. In return, the ants feed on sugary secretions produced by the aphids.

3g) The estimated linear regression equation (with numbers rounded to 4 digits after decimal) between the variables is:

3c) The INDEPENDENT  VARIABLE/S in Problem is/are:

2j) Type in the Excel function along with inputs you can use to calculate the critical-value (at a 0.04 level of significance) in the box below. [1 point] Type in the critical-value that you would use for conducting the Hypothesis Test in this problem in the box below. [1 point]   Note: You become eligible to earn these points ONLY if you answer all the questions asked.

Problem 3 Description: [10 + 21 = 31 points] The regional transit authority of a southern city believes it can predict Annual Maintenance Cost it incurs for the buses it runs based on their length of service. The city collected the following sample data randomly. Perform an appropriate analysis on the following data at 0.02 level of significance and answer the following questions.   Bus Number Years in Service Annual Maintenance Cost ($1000s) 1 5 15.8 2 4 19.0 3 4 16.0 4 3 15.0 5 3 11.0 6 2 9.6 7 2 11.8 8 2 10.4 9 1 7.0 10 1 7.4   Note: You should be able to copy-paste the above table into an Excel worksheet. If you have any issues, type the numbers into the sheet yourself and perform the analysis.   3a) Generate report in Excel (round all the numbers to 4 digits after decimal using Increase/Decrease Decimal option) and Copy-Paste Excel Report in the box under this question. [10 points]. Your Honorlock recording must show you generate this report for you to earn points.   After generating the report, answer the following questions (Questions 2 through 21) below for another 21 points.   There is NO way to answer a lot of questions without generating Excel report. If anyone answers all the questions and generates report in the end, that can only happen if they cheated. Action will be taken against such students for academic integrity violation.   Note: You must answer all the questions below to earn points. Attaching an Excel report/file is not sufficient to earn points. To earn points, you must demonstrate your understanding for the topic and ability to answer specfic questions with the help of your analysis/report.   WARNING: Do not violate academic integrity ONLY ONE SYSTEM IS ALLOWED FOR THE EXAM. Any allowed resource on Canvas you use for the exam must be visible in your Honorlock recording. Using a second computer or other gadgets is a violation of Academic Integrity. I must see you working in Excel and answering questions in your Honorlock recording. If I don’t see you working using Excel functions and formulas in Excel in your Honorlock recording, that would be an academic integrity violation, and ZERO POINTS will be recorded as your grade. All academic integrity violations will be reported to USF for further disciplinary action, that could be receiving an “F” grade for the course to other severe actions such as dismissal from the program, … etc. So, please follow instructions and maintain academic integrity.  

3h) The correct Null Hypotheses to test for the statistical significance of Linear Regression between the variables in this problem is:

3q) What is the sample correlation coefficient (rounded to 4 digits after the decimal) between the two variables: Years in Service and Annual Maintenance Cost ($1000s)

Barnacles attach to a whale and gain transportation, while the whale is unaffected.