Tandard deviation of the sample of juveniles, Basic Statistics

Assignment Help:

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.

 


Related Discussions:- Tandard deviation of the sample of juveniles

Financial decision making managers, Income statement: Sosa Corporation rece...

Income statement: Sosa Corporation recently reported an EBITDA of $31.3 million and $9.7 million of net income. The company has $6.8 million interest expense, and the corporate tax

Manufacturing overhead referred to as factory overhead, Manufacturing overh...

Manufacturing overhead referred to as factory burden, factory overhead, and manufacturing support costs refers to indirect factory related costs which are incurred when a product i

Spss data analysis assignment, At the end of their first year of teaching, ...

At the end of their first year of teaching, 11 teachers were jointly ranked by two school administrators to reflect their relative degree of teaching competence. Unknown to the adm

#title. .decision tree, Assume that you have a client that is a paper manuf...

Assume that you have a client that is a paper manufacturer and they have expressed concern that the government will pass a new regulation banning the use of chlorine-based technolo

Completely randomized design, Ask question #MinimumAgency revenues. An econ...

Ask question #MinimumAgency revenues. An economic consultant was retained by a large employment agency in a metropolitan area to develop a regression model for predicting monthly a

Measures of central tendency, List down various measures of central tendenc...

List down various measures of central tendency and explain the difference between them?

Applications of linear regression, Linear regression is widely used in bi...

Linear regression is widely used in biological behavioral and social sciences to describe relationship between variables. It ranks as one of the most important tools used

Draw concerning the effectiveness of the medications, A testing organizatio...

A testing organization is evaluating the effectiveness of sinus relief tablets, Relief and SineOut.  As part of the analysis the organization collects 44 sinus sufferers and random

Define the research problem, Choose one of the following four problems depe...

Choose one of the following four problems depending on your area and interest. a. What explains why a particular political candidate wins and his/her opponent loses a tightly co

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd