1. A major company wants to estimate the number of working days lostbecause of employee absence from work. Using a sampling fraction of 1/25,a SRS sample S of size 2000 is drawn from the population of employees. Foreach employee in the sample yi, the number of days absent, determined. LetS₁ and S₂ denote the subsamples of male and female employees, respectively.Some summary survey results are:Males: ns, 931 Σs, Yi = 12,604 Σs, y = 232, 226Females: ns₂ = 1069 Σs, yi = 20,412 Esy476, 208(a) Estimate the mean number of days absent for all employees and com-pute a 95% confidence interval for this quantity.(b) Answer the questions in (a) for male employees.(c) Can you estimate the total number of days absent? Explain.

Given Information: Males: Sample size ns1=931 Sum of observations ∑s1 yi=12604 Sum of squares of…

Answered: 1. A major company wants to estimate…

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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The 18 faculty members in a college Economics department range in age from 32 to 68 as presented in the step plot below. If the oldest faculty member retires and is replaced by a 26-year-old, the median age will: 324899 403569 534789 9 638 O decrease by 2 years. O stay the same. O increase by 2 years. increase by 4 years.
Q5) The following data represent the yield on 90 consecutive batches of ceramic substrate to which a metal coating has been applied by a vapor-deposition process. Find the sample mean, median, variance and coefficient of variation of the given data. 94.186.1 95.3 84.9 88.8 84.6 94.4 84.1 93.2 90.4 94.1 78.3 86.4 83.6 96.1 83.7 90.6 89.1 97.8 89.6 85.1 85.4 98.0 82.9 91.4 87.3 93.1 90.3 84.0 89.7 85.4 87.3 88.2 84.1 86.4 93.1 93.7 87.6 86.6 86,4 86.1 90.1 87.6 94.6 87.7 85.1 91.7 84.5 95.1 95.2 94.1 96.3 90.0 86.1 92.1 94.7 89.4 90,6 89.6 90.0 90.1 92.4 94.3 96,4 87.3 93.2 88.2 86,6 86.7 86,4 91.1 88.6 92.4 84.1 94.3 90.6 82.6 97.3 91.2 83.0 85.0 89.1 83.1 96.8 87.5 84.2 85.1 90.5 95.6 88.3
The following data represent the weights (kg) of a sample of the 37 students in one of the colleges. What is required: Create the frequency distribution table for these data: 100 , 65 , 70, 83 , 94, 55, 46 , 47.8 , 62.3 , 77.2, 61.3, 62.9, 66.5 , 66.9 , 68.3 , 70 , 73.2, 73.8 , 82.4, 58.2, 59.9, 54.4, 58.7, 52.6, 51.8, 74.1, 80.2, 75.1, 78.3, 58.5 , 62, 66.3, 65, 67.1, 88.2, 89.1 , 80.1, 76.3
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The following data give the number of keyboards assembled at the Twentieth Century Electronics Company for a sample of 25 days. Calculate the following: 1st Decile, 28th Percentile, 7th Decile, and 85th Percentile.
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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.
tion 1 Consider the following data set: et red 3, 4, 2, 2, 1, 1, 5, 4, 1, 2, 3, 4, 3, 2, 5. Find the median d out of move flag Select one: a. 5 b. 4 С. 2 d. 3
For 20 consecutive weeks, a store owner recorded a sample number of customers each week as follows: 300 400 324 326 327 329 415 362 321 375392 383 345 391 395 400 362 396 420 430 Compute for the following:a. Medianb. Sample Variancec. Skewness Coefficient (Use Pearson’s Second Coefficient)

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