**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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8. An analyst is comparing data collected from randomly assigned test sub- jects who used two different types of hand cream (designated I and II), each for a period of six months. The subjects used one type of cream on one hand and the second on the other and reported a "softness" factor on a scale of 1 to 10 for each hand. What steps should the analyst take to determine which cream is more effective? (A) Calculate the mean difference between the right-hand results and the left-hand results, then carry out a one-sample z-test. (B) Calculate the difference in means between the right-hand results and the left-hand results, then carry out a two-sample z-test. (C) Calculate the mean difference between the right-hand results and the left-hand results, then carry out a one-sample t-test. (D) Calculate the difference in means between the right-hand results and the left-hand results, then carry out a two-sample t-test. (E) Calculate the individual differences between the Type I and Type II…
A college alumni Organization sent a survey to all recent graduates to ask their annual income. 20% of the alumni responded, and their mean annual income was $40,000 with a standard deviation of $10,000. Explain why these data should not be used to construct a confidence interval for the mean annual income of all recent graduates.
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…
A biologist wants to determine if different temperatures (15oC, 25oC, or 35oC) and amounts of sunlight (partial or full) will affect the growth of plants. He will test each combination of temperature and sunlight by randomly assigning 15 plants to each of the combinations. What type of sampling is described in this study? one sample paired data two samples more than two samples
2. Listed below is the output from an ANOVA of data from a 4X3 (4 levels of Factor A, 3 levels of Factor B) design (n = 4 per cell). Fill in the missing info for degrees of freedom, mean square, and F columns. Interpret results. Type II Sum of Source Squares Mean Square Fobs Sig? Y/N df Essi. a 20.917 b 33.792 a*b 13.208 Error 104.000 36
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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