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For a hypothetical survey to determine the number of pileated woodpecker nests, the study area is divided into N = 4 plots. For the ith plot in the population, yi is the number of nests, while xi is the number of "snags" (old trees that provide nesting habitat). The values for each population unit follow: y1 = 2, x1 = 20; y2 = 3, x2 = 25; y3 = 0, x3 = 0; y4 = 1, x4 = 15. Consider a simple random sampling design with sample size n = 2.
(a) Make a table listing every possible sample of size 2, the probability of selecting each sample, the estimate Ny of the population total for each sample, and the ratio estimate τˆr for each sample.
(b) Give the value and variance expected for the estimator Ny.
(c) Compute the exact mean and mean square error of the ratio estimator τˆr.
The question belongs to Basic Statistics and it discuss about creating alternate hypothesis for null hypothesis in research
using the table of continuous data below how would i compute the 25th 50th and 75th percentiles?2512897456563474
Work through a simple regression calculation using intrinsic job satisfaction nd extrinsic job satisfaction. Select thirty data points to use for each group.
Given that a person uses five or more prescriptions, determine the probability that the person is age 65 or older.
In an area having sandy soil, 50 small trees of a certain type were planted, and another 50 trees were planted in an area having clay soil. Let X = the number of trees planted in sandy soil that survive 1 year and Y = the number of tree..
Find a 90% confidence interval for the population mean if the sample mean is 1250 with a sample standard deviation of 35 for a sample of 20.
For how many integers from 1 through 10 can the natural alogarithms be approximated given that ln2 ≈ 0.6931, ln3 ≈ 1.0986, and ln5 ≈ 1.6094? Use the laws and rules of logarithms to approximate these logarithms ( DO NOT USE A CALCULATOR). Explain..
The null hypothesis is to be tested at the 10% level of significance. The critical value from the table is:
Using one proportion z test to find whether or not to support the claim - There is little evidence to reject H 0 , therefore they conclude the tvs are 20 pounds on average.
Your specific assignment for this week is to select one type of quantitative health datum to collect from your own life. Some examples of data to collect could be: How many minutes do you spend exercising each day
What is the probability of having exactly 2 crashes in the each of the first two months, given that there are exactly 6 crashes in the first 3 months?
A United Nations report shows the mean family income for Mexican migrants to the U.S.. is $27,000 per year. A FLOC evaluation of a sample 25 Mexican families units reveals a mean to be $30,000 with a sample standard deviation of $10,000.
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