2. Random samples with size 5 are drawn from the population containing the values 26, 32, 41, 50, 58, and 63.o Determine the number of possible samples with size 5.• Construct the distribution of the mean of all samples.o Find the mean of the mean of the sample means.o Determine the standard error of the sample means.

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Answered: • Determine the number of possible…

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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Please choose the correct answer. A box has red marbles, 3 black marbles and 5 blue marbles. A marble is picked at random. what is the total number of possible outcomes? A. 2 B. 3 C. 5 D. 10 8. How would you interpret a very small variance or standard deviation? A. The values of the random variables are equal to the mean. B. The values of the random variable are farther from the mean. C. The values of the random variable are closer to the mean. D. The values of the random variables have no relationship with the mean.
3. Complete the first 3 columns of the table below. Values Deviations Square deviations X - X X (X-X)² Standard (z) scores X - X S Z= a. Compute the sample variance and sample standard deviation by definition. b. Fill in the last column of the table c. Compute the coefficient of variation.
The finite population correction is most useful for which of the following? a. It adjusts the estimated mean when the sample size is a large fraction of the population size. b. It adjusts the standard error of the mean when the sample size is a small fraction of the population size. c. It adjusts the estimated mean when the sample size is a small fraction of the population size. d. It adjusts the standard error of the mean when the sample size is a large fraction of the population size.
Determine whether the sampling is dependent or independent. Indicate whether the response variable is qualitative or quantitative.A psychologist wants to measure the effect of music on memory. He randomly selects 80 students and measures their scores on a memory test conducted in silence. The next day he measures their scores on a similar test conducted while classical music is playing. The mean score without music is compared to the mean score with music. Group of answer choices a.quantitative, dependent b.qualitative, independent c.qualitative, dependent d.quantitative, independent
As the sample size increases, the mean of the sampling distribution ▼ stays the same. gets larger. gets smaller.
It is not essential to know the value of the population variances to test for the equality of two variances from independent samples. O a. True O b. False
The expected value of the mean is: The mean of the true population means The mean of the standard errors of the mean. The mean of the random sampling errors. The mean of the sampling distribution of the mean.
12. Stem and leaf Plot: (Sample )Variable: Gas $ Key: 12 = 1:2 1 : 2 2 : 3 : 4 : 5 : 55 6 : 7 : 88 8 : 9 12a. Use the above Stem and leaf plot and calculate the range. 12b. Use the above Stem and leaf plot and calculate the Quadratic Mean. 12c. Calculate the upper fence. 12d. Estimate the standard deviation.
3. Complete the first 3 columns of the table below. Values Deviations Square deviations X X - X (X-X)² Standard (z) scores X-X Z = a. Compute the sample variance and sample standard deviation by definition. b. Fill in the last column of the table c. Compute the coefficient of variation.
The coefficient of variation (CV) measures the dispersion of the data relative to the sample mean. Suppose the sample mean of a particular variable is 550 and the sample variance is 6400. What is the CV? O 32.6% O 1.163.6% O 10.7% O 14.5%
5. To illustrate that s2 measures the spread, compute s2 for the two samples 109, 110, 111 and 105, 110, 115, and compare.

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• Determine the number of possible samples with size 5. • Construct the distribution of the mean of all samples. o Find the mean of the mean of the sample means. • Determine the standard error of the sample means.