Suppose a population of size N = 160 is stratified into two regions according toWi = 0.5625 and W2 = 0.4375 with Hz.1 = 6 and Hz2 = 6.5. Samples of size n = 10 and n2 = 8 arecollected from each population. The values in each sample are given in the table below.1.Sample 1х у5.38 17.02 11.03 40.95Sample 2_y0.421.217.35 26.624.94 16.313.0811.302.54 6.6910.23 36.718.89 29.192.809.525.97 20.452.569.117.94 26.233.44 12.948.57 26.54 11.52 40.743.77 13.119.84 32.68a. Use separate ratio estimation to estimate the population mean for this population.b. Compute an estimate of the variance of the estimator used in a.c. Use combined ratio estimation to estimate the population mean for this population.d. Compute an estimate of the variance of the estimator used in c.e. Is the separate ratio estimator more efficient than the combined ratio estimator? Explain.f. Comment on the validity of the ratio estimation approach for each strata. Use appropriateillustrations to aid vour answer.

sample 1 sample 2 x y x y 5.38 17.02 11.03 40.95 0.42 1.21 7.35 26.62 4.94 16.31 3.08 11.3…

Answered: Suppose a population of size N = 160 is…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Three randomly selected children are surveyed. The ages of the children are 2, 3, and 10. Assume that samples of size n = 2 are randomly selected with replacement from the population of 2, 3, and 10. Listed below are the nine different samples. Complete parts (a) through (d). 2,2 2,3 2,10 3,2 3,3 3,10 10,2 10,3 10,10 a. Find the value of the population variance o². (Round to three decimal places as needed.)
Determine the sample size if o = 6, population mean = 25, sample nean = 23 and the desired degree of precision is 99 per cent. Sta olds
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Refer to the table of sample values in Section 8.2 Exercise 6 of the text.Find the values of the UCL and LCL used in the p chart for this data, and round your answers to 5 places after the decimal point.Hint: Make sure that you use the EXACT value of (p-bar) in your calculations. a. UCL = 0.69914LCL = -0.21164 b. UCL = 0.69955LCL = -0.21155 c. UCL = 0.69955LCL = 0 d. UCL = 0.69914LCL = 0
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Find sample kurtosis and geometric mean for data 36,65,185,246,248,313,341,342,372,457,495,599,601,608,832,871
The contents (in ml) of a sample of 18 bottles of locally distributed premium essential oils are given. 0.68, 1.29, 0.93, 1.02, 0.74, 1.43, 1.29, 1.20, 0.68, 1.46, 1.33, 1.14, 1.33, 1.46, 0.74 1.33, 1.02, 0.93. The midrange isA. 1.055B. 1.070C. 1.100D. 1.14

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