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

Cost inventory, how do I find the cost of inventory?

how do I find the cost of inventory?

Using a venn diagram evaluate the probability, Question: (a) 100 indiv...

Question: (a) 100 individuals applied for systems analyst positions with a large firm during the past year. 40 of them had some prior work experience (W), and 30 had a profes

T distribution, t distribution has proportionately smaller areas in its tai...

t distribution has proportionately smaller areas in its tail than normal distribution. is it true?

Detemine lambda , A.  A computer rejuvenation facility receives systems fro...

A.  A computer rejuvenation facility receives systems from the fleet at 24 systems/day (assume this is a Poisson process).  It takes the triage function 30 minutes (assumed exponen

Probability statistics, Probability 3DP, a Luxembourg-based company pla...

Probability 3DP, a Luxembourg-based company plans to develop and sell highly specialized 3D printers. The cost of product development is estimated at EUR 50,000.-, irrespective

Accounting is an art of recording, Accounting is an art of recording Yes...

Accounting is an art of recording Yes, we recognize upon that declaration because if we evaluate the primary features of the accounting program we will find that primary three p

Question, #quea national poll of 1836 respondents indicated that 36% suppor...

#quea national poll of 1836 respondents indicated that 36% support the NDP. Test whether this is sufficient evidence to show that the NDP support has increased since the election.

Factor reversal test, factor reversal test or circfied ular test satis reve...

factor reversal test or circfied ular test satis reversal test question #Minimum 100 words accepted#

Estimate the expected monetary value, 3DP, a Luxembourg-based company plans...

3DP, a Luxembourg-based company plans to develop and sell highly specialized 3D printers. The cost of product development is estimated at EUR 50,000.-, irrespective of whether or n

Amp-amplification law, Amp-amplification law The job of an amplifier is o...

Amp-amplification law The job of an amplifier is obviously to amplify, but the law it abides by isn’t so simple. Ultimately, the amplifier is comparable to a valve, in the sense

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