(c) Suppose that a random sample of size 2 is to be selected, but this time sampling will be done with replacement. Using a method similar to that of part (a), construct the samplingdistribution of x. (Hint: There are 16 different possible samples in this case.)0.80.8ODensityDensity0.60.40.20.00.80.60.40.20.0666.56.57 7.578 8.5 9 9.5SampleMean7.5SampleMean88.59 9.5GODensityDensity0.60.40.20.00.80.60.40.20.0666.5 7 7.5 8 8.5 9 9.5SampleMean6.5787.5SampleMean8.5 9 9.5Ⓡ Consider the following population: {6, 7, 8, 9). For this population the mean is6 + 7 + 8 + 94μl =Suppose that a random sample of size 2 is to be selected without replacement from this population. There are 12 possible samples (provided that the order in which observations areselected is taken into account).6,78, 66,7Sample Sample Mean6,86,9(a) Calculate the sample mean for each of the 12 possible samples.7,6= 7.57,87,96,8 6,9 7,68,78,98, 69,67,8 7,99, 79, 8

Population given We have to select sample of sample size=2 With replacement and without replacement…

Answered: (c) Suppose that a random sample of…

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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(d) A random sample of 8 observations are taken to determine if there is evidence that the average concentration of certain material less than 11ppm. By using level of significance, a = 0.05, test the claim. Observation 1 Concentration 11.0 Table Q5(d) 3 4 9.4 7.8 2 10.7 5 11.3 6 9.1 7 10.2 8 10.5
Suppose the sample space for a continuous random variable is 0 to 400. If the area under the density curve for the variable from 0 to 72 is 0.18, what is the area under the density curve from 72 to 400? A. 0.82 O B. 0.982 O C. 0.92 O D. 0.18
2% of the world population is naturally blond. In a random sample of 100 people, the proportion of natural blonds is found. The sampling distribution of is O A. approximately normal because p is always approximately normal O B. not approximately normal because np 5
No. Date: Let , X2, ; Xn be a random Sample from a normal population wita mean uand Variance o takken independently from another random Sample Y, Yz Y- from a noimal population Xi-ke with mean o and Variiance o?. Lot Z = 2. Derive the distribution T= Zi m-1
1. Fit a Gaussian distribution N(x,o?) to the following data. This means that we want to model and represent the given data, in a probabilistic way, using a Gaussian distribution. Then, sketch the distribution. X = [0,0,0.1,0.5,0.9,0.2 ,0.1] Hint: Find the sample mean and sample variance of the data.
I need help with parts D and C only. Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with σ = 2.9%. A random sample of 10 bank stocks gave the following yields (in percents). 5.7 4.8 6.0 4.9 4.0 3.4 6.5 7.1 5.3 6.1 The sample mean is = 5.38%. Suppose that for the entire stock market, the mean dividend yield is μ = 4.1%. Do these data indicate that the dividend yield of all bank stocks is higher than 4.1%? Use α = 0.01. (a) What is the level of significance? (Enter a number.)State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? H0: μ = 4.1%; H1: μ > 4.1%; right-tailedH0: μ = 4.1%; H1: μ < 4.1%; left-tailed H0: μ > 4.1%; H1: μ = 4.1%; right-tailedH0: μ = 4.1%; H1: μ ≠ 4.1%; two-tailed (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. The Student's t, since n is large with…
The acceptable level for insect filth in a certain food item is 2 insect fragments (larvae, eggs, body parts, and so on) per 10 grams. A simple random sample of 50 ten-gram portions of the food item is obtained and results in a sample mean of x= 2.6 insect fragments per ten-gram portion. Complete parts (a) through (c) below. (a) Why is the sampling distribution of x approximately normal? O A. The sampling distribution of x is approximately normal because the population is normally distributed. O B. The sampling distribution of x is assumed to be approximately normal. OC. The sampling distribution of x is approximately normal because the sample size is large enough. O D. The sampling distribution of x is approximately normal because the population is normally distributed and the sample size is large enough. Click to select your answer and then click Check Answer. 5 parts remaining Clear All Chect Arw P Type here to search AD4 4 ENG 746 PM 3/28/2021 DELL 1Home PoUp Delete PrtScr Insert…
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