Purchase Solution

Determining population size

Not what you're looking for?

Ask Custom Question

A person studying the growth of an animal population has determined T = 25logN − 50for the time T, in years, at which the population has reached the size N.
a. At what time does the population reach a size of 200? Explain how to find this.
b. What was the initial population size? How did you find it?

Purchase this Solution
Solution Summary

Given an equation, the population size is determined at a given time in a series of clear calculations.

Solution Preview

a. Size N = 200.

So now substitute this value in the equation.

T = 25log(200) - ...

Purchase this Solution
Free BrainMass Quizzes
Probability Quiz

Some questions on probability

Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.

View More Free Quizzes
Related BrainMass Solutions

  • Suppose that we will randomly select a sample of four measur

    In your own words, describe the units in this population. 2. Why do we need to take a preliminary sample when determining the size of the sample needed to make the margin of error of a confidence interval equal to E? 1.

  • Carrying capacity

    dP/dt = rP(1- p/K) find an expression for the size of the population after t years by determining constant r.

  • Sample Size and Population Mean

    Q2: Why might one be interested in determining a sample size before a study is undertaken? How do population variability and a level of certainty affect the size of the sample needed in a study?

  • Calculating a Confidence Interval

    Is the size of the population relevant when one is determining the sample size for a confidence interval? What is necessary to determine the sample size?

  • Determining appropriate sample sizes

    63408 Determining appropriate sample sizes Why is it important to determine an appropriate sample size and how can you determine what sample size you should use to ensure that your population mean (mu) is within your confidence interval?

  • Testing hypotheses based on a given data set

    We choose Step 3: Selecting the test statistic and determining its value from the sample data As the sample size n=29 is less than 30, and the population standard deviation is unknown, we should choose t-test.

  • Steps in Selecting and Evaluating Statistical Test Controls

    . - The first step involves determining test objectives where the auditor estimates the rate of deviations from the controls in the population being studied.

  • Sample Size Determination and Sample size Calculator

    (Be sure to cite and reference the website) On Sampling Determination The University of Lethbridge (2011) suggested the following when determining the sample size: first, estimate of the population standard deviation, second, determine the acceptable

  • Determining sample size when planning statistical study

    460795 Determining sample size when planning statistical study SAMPLE SIZE DETERMINATION Determining sample-size is important step when planning a statistical study. It is also quite a difficult task since many variables must be considered.

View More Related Solutions