Tandard deviation of the sample of juveniles, Basic Statistics

The National Marine Fisheries Services is part of the National Oceanic and Atmospheric Administration. NMFS's programs support the conservation and management of living marine resources.

There are 6 species of sea turtles in the United States and all are protected as endangered or threatened species. Rarely does a hatchling sea turtle live to maturity. In fact, it is believed that only 1 in 10,000 hatchlings lives long enough to reproduce.

In a study by Hays & Marsh reported in the Canadian Journal of Zoology (75: 40-46, 1997), 71 loggerhead sea turtles were captured and calculated off the coast of Britain. The shell lengths of the turtles are shown in the stem-and-leaf plot at the right.

Part of the purpose of the study was to estimate the growth rate of juvenile turtles. The turtles were hatched off the coast of Florida and their drifting time in the Atlantic Ocean was estimated to be between 1.8 and 3.75 years. From this and the fact that a typical hatchling has a shell length of 4.5 centimeters, Hays and Marsh estimated that juvenile loggerhead sea turtles grow at a rate of among 4.3 and 8.9 centimeters per year.

1. A loggerhead sea turtle is classified as a juvenile if its shell length is less than 40 centimeters. How many of the turtles in the sample were juveniles?

 2. Use the sample to make a point estimate of the mean shell length of all juvenile loggerhead sea turtles that drift from their hatching site to the coast of Britain.

3. Find the standard deviation of the sample of juveniles.

4. Use the sample to create an interval estimate of the mean shell length of juvenile loggerhead sea turtles that drift from their hatching site to the coast of Britain.

(a) Use a 90% confidence level.

(b) Use a 95% confidence level.

(c) Use a 99% confidence level.

5. How would your results have differed if you had used all the turtles in the sample instead of just the juvenile turtles? Describe your reasoning.

 

Posted Date: 3/16/2013 3:07:21 AM | Location : United States







Related Discussions:- Tandard deviation of the sample of juveniles, Assignment Help, Ask Question on Tandard deviation of the sample of juveniles, Get Answer, Expert's Help, Tandard deviation of the sample of juveniles Discussions

Write discussion on Tandard deviation of the sample of juveniles
Your posts are moderated
Related Questions
The company acquired 50000 8% preferencd shares (with a par value of R4 each) in cross limited on 30 june 2006 for R180000.transaction costs at the acquisition date amounted to R12

Write a report to an investor comparing the performance by using the financial statements between two different companies

Can the Depreciation on Assets be recorded in Single Entry system? No, it cannot be possible. What do you mean by Computer Hardware? The computer is made with different co


#This is a chance to perhaps incorporate some of your experience, interests, and career business/management goals and ambitions within the context of an individual project paper.

solved example with data of bi variate frequency distribution

19. Welnor Industrial Gas Corporation supplies acetylene and other compressed gases to industry. Data regarding the store''s operations follow: • Sales are budgeted at $320,000 fo

Normal Reaction: When two materials are in get in touch with, then the materials put out makes on each other. The makes are reverse to each other in route and are similar to each o

what is the role of statistics in other sciences?

what are the procedure of job order costing