Practice Problems: 1. You have been tasked to estimate the number of rattlesnakes using a series of hibernacula along a ridge in western Texas. To accomplish your assigned task, you capture 37 rattlesnakes and mark them with PIT tags. You return to the site one week later and resample the population by capturing 52 rattlesnakes. Of the 52, 30 are marked from your first sample. How many rattlesnakes are in the population? 2. Use the number calculated in the previous problem to populate the following table for the rattlesnake population estimate for 2018. Then use all values in the table to calculate lambda for each consecutive two-year period. Year Population Estimate 2017 70 2018 2019 75 2020 68 2021 82 Estimated lambda (^)
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- Question:- Please describe advantages and disadvantages of Principle Components Analysis (PCA) method in controlling population stratification.PLEASE HELP! Question: In Benicia High’s school garden the carrying capacity for blue belly lizards is 300. If the current population size is 280 and the rmax is calculated to be 0.42. How many lizards will be in the population after 1 year? (show work)Need help with 1 and 2 questions: 1.) Two different populations of commander butterfly were studied over a period of two years. The following results were obtained. Population size of commander butterflies Population| Original size| Final size 1 2436 2873 2 2185. 2649 Which of the following concepts would best compare the change in population size of the two populations? A.) Growth rate (gr ) B.) Biotic potential (r) C.) Density (Dp ) D.) Per capita growth rate (cgr ) 2.) When population density reaches the carrying capacity of the environment, the death rate in the population becomes A.) less than the birth rate B.) equal to the birth rate C.) more than the emigration rate D.) more than the immigration rate
- There was another research effort underway to estimate the squirrel population on the PLU campus. The first trapping effort resulted in 15 individuals being captured, marked and released. The second capture effort resulted in 15 new squirrels being captured and 5 squirrels were recaptured. What is the estimated squirrel population? What are the primary assumptions of the population estimation procedure used in this question?PRACTICE Calculate the population densities for the following countries. Round to two decimal places. Country: Albania Albanla- Population: 3 002 859 Area: 28 748 km2 Country: Colombia Population: 45 239 079 Colombla Area: 1 138 910 km2Task 3 The German national team scored the following numbers of goals in 50 randomly selected international matches Number of goals per match 1 2 3 4 18 22 5 3 2 Number of matches with this result In the following, assume that the goal numbers collected come from a simple random sample of the population of all international matches of the German national team. come from. 1. Determine the 95% confidence interval for the expected value of the number of goals in all international matches. 2. The standard deviation of goals per match in the population of all international matches is now given as o = 1, 0. How large must the sample size be so that the 95% confidence interval for u is not wider than 0.5 goals?
- What population and location would you like to complete placements with? Why do you want to work with this population and location?Briefly explain the rationale for deciding on sample size for a population study. Identify Three probability sampling techniques that may be employed for data collection purposes and write briefly on any one of your choice.Please help me with these ungraded practice problems. I am a bit confused. Draw the plots using google sheets or excel and please include pictures of the plots and directions on how you plotted it. Equation 3 and 4 are attached as images. Equation (3) is density independent because the population growth that takes place between time t and time t +1 does not depend on the population density N. That is, it is density independent because there is no N term on the right hand side of Equation (3). In contrast, one possible discrete time mathematical model that includes density dependence (equation 4) is where K is the carrying capacity (expressed in units of population density). Note that when Nt= K, the whole term in the exponent equals zero. Since e0 = 1, this means that the ratio Nt+1/Nt does not change from one year to the next when Nt = K. 1a) Draw a plot of the ratio of population densities in Eq. (3) as a function of N if you set if r = 0.05. 1b) Draw a plot of the ratio of…