a. Calculate the population mean monthly salary, µ.There are 15 possible samples of size 4 from the population of sixofficers. They are listed in the first column of the following table.SampleSalariesА, В, С, D8, 12, 16, 2014А, В, С, Е8, 12, 16, 2415А, В, С, F8, 12, 16, 2816A, B, D, E8, 12, 20, 248, 12, 20, 288, 12, 24, 2816А, В, D, FА, В, Е, FA, C, D, E1718A, C, D, FА, С, Е, FA, D, E, FВ, С, D, EВ, С, D, FВ, С, Е, FB, D, E, FC, D, E, Fb. Complete the second and third columns of the table.c. Complete the dotplot for the sampling distribution of the samplemean for samples of size 4. Locate the population mean on thegraph.141516171819202122d. Obtain the probability that the mean salary of a random sample offour officers will be within 1 (i.e., $1000) of the population mean.

Answered: a. Calculate the population mean…

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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9. Which formula is applicable when dealing with data about the sample means? A. z = * В. пл (1-п) C. . *-H D. *-H
Maryland, as the four U.S. cities with the highest percentage of millionaires (Kiplinger website). Consider a sample of data that show the following number of millionaires for samples of individuals from each of the four cities. Millionaire Cannot conclude Bridgeport, CT CA San Jose, CA Yes 42 36 No 458 264 a. What is the estimate of the percentage of millionaires in each of these cities (to 1 decimal)? 0.436 Use Table 3 of Appendix B to find the p-value. The p-value is greater than 0.10 What is your conclusion? City Washington, D.C. 35 365 Bridgeport, San Jose, Washington, Lexington Park, CT D.C. MD Lexington Park, 46 27.4 Percentage, % 36.5 b. Using a = 0.05 level of significance, test for the equality of the population proportion of millionaires for these four cities. What is the p-value? Compute the value of the x² test statistic (to 3 decimals). 36.5 MD 33 367 that there is a difference among the population proportion of millionaires for these four cities.
1. A researcher plans to conduct a survey among students in a public high school. If the population of thisschool is 5,000, find the sample size and the percentage from the N population. (Margin of error is 5%)A = {9,10,11,7,13}B = {10,10,10,10,10}C = {1,1,10,19,19}a. Calculate the mean of each data set.b. Calculate the standard deviation of each data set.c. Which set has the largest standard deviation?
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.)
Calculate d and Sa for the following set of paired data. Calculate each paired difference by subtracting the values in Group A from the corresponding values in Group B. Round your answer to three decimal places, if necessary. Group A 17 21 29 25 28 22 16 24 23 Group B 26 24 24 22 19 22 16 24 27 28 Answer E Tables E Keypad Keyboard Shortcuts d = Sd =
Consider a sample with data values of 10, 40, 60, 85, 90. Compute the IQR. Select one: O a. 45 b. 85 С. 90 d. 60 е. 40 Of. 10
R2
If the deviations six of values from their mean are 0 , -6, 7 , -2 , 5 , -4 then the variance equal Select one: a. 21 b. 26 c. 4.2 d. 5.2
Assume that we have a data set composed of three features. After doing PCA we find that the variances of the three principal components are 18, 5 and 1. What fraction of the variance of all the data can be expressed in terms of the first principal component? Select one: О а. 7/8 b. 2/3 O C. All of it. O d. 3/4
Average monthly wages (per employee) in 4 sectors of an economy are as follows: industry: 2000 dinars, building: 2200 dinars, agriculture: 1500 dinars, services: 1800 dinars. Number of people employed in the four sectors are 5 million, 2 million, 6 million, and 2 million, respectively. Using the concept of harmonic mean compute the average monthly wages in the economy under consideration.

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