**Study on Lighting and Assembly Method Impact on Productivity**A study was conducted to examine the influence of different lighting types and assembly methods on worker productivity in the production of electronic circuit boards. The following results were recorded:**Table: Productivity Results**- **Assembly Method (A) / Lighting (B)** - Method 1: - Fluorescent: 49, 32 - Incandescent: 42, 45 - Means: 42 - Method 2: - Fluorescent: 37, 30 - Incandescent: 45, 32 - Means: 36 - Overall Means: - Fluorescent: 37 - Incandescent: 41 - Grand Mean: 39**Discussion Questions:**a. What are the total degrees of freedom for this experiment?b. What is the computed value for Factor A (assembly method) sum of squares (SSA)?**Analysis**The table presents the productivity scores under two types of lighting conditions (Fluorescent and Incandescent) across two assembly methods. Means for each assembly method and lighting condition, as well as the grand mean, are provided for further analysis.

The sum of squares between factors ( or treatments) formula is defined as below…

Answered: A study to examine the effect 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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Prepare a layout and resulting analysis of variance (a) table for five types of fertilizers viz., A, B, C, D, and E and two blocking factors viz., varying soil fertility and varying seeds. Answer:
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5. Use the data set 1. This is the result of a randomized trial in Uganda where 10 students in the same village were selected and given a solar-powered reading lamp. The second group was not given any lamp. The number of students out of 10 who improved their school grades for both groups were recorded. The experiment was repeated in 50 villages. Test the hypothesis that solar-powered reading lamps are effective in improving school grades in Uganda.
A factor in determining the usefulness of an examination as a measure of demonstrated ability is the amount of spread that occurs in the grades. If the spread or variation of examination scores is very small, it usually means that the examination was either too hard or too easy. However, if the variance of scores is moderately large, then there is a definite difference in scores between "better," "average," and "poorer" students. A group of attorneys in a Midwest state has been given the task of making up this year's bar examination for the state. The examination has 500 total possible points, and from the history of past examinations, it is known that a standard deviation of around 60 points is desirable. Of course, too large or too small a standard deviation is not good. The attorneys want to test their examination to see how good it is. A preliminary version of the examination (with slight modifications to protect the integrity of the real examination) is given to a random sample of…
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A factor in determining the usefulness of an examination as a measure of demonstrated ability is the amount of spread that occurs in the grades. If the spread or variation of examination scores is very small, it usually means that the examination was either too hard or too easy. However, if the variance of scores is moderately large, then there is a definite difference in scores between "better," "average," and "poorer" students. A group of attorneys in a Midwest state has been given the task of making up this year's bar examination for the state. The examination has 500 total possible points, and from the history of past examinations, it is known that a standard deviation of around 60 points is desirable. Of course, too large or too small a standard deviation is not good. The attorneys want to test their examination to see how good it is. A preliminary version of the examination (with slight modifications to protect the integrity of the real examination) is given to a random sample of…
Dr. Maddan's eye drops are supposed to cause significant reduction is eye redness. The following table shows the results of a recent study where a random sample of individuals took part in a placebo controlled study. No Reduction in Redness Reduction in Redness Total Eye Drops 120 220 340 No Eye Drops Total 120 140 260 240 360 600 With 5% level of significance, determine if eye redness reduction is dependent upon taking the eye drops. Provide, a. the Chi-square statistic. b. the critical value or the p-value. c. Your decision on whether or not to reject Ho.

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