What is the df subject? What is the SS subject?What is F between? A researcher wanted to know which local brewery had the best IPA. Each participant tried a sample from all three different breweries (Ore Dock, Black Rocks, and Barrel + Beam) and was asked to rate each one on a scale of 0-100. Use the six steps of hypothesis testing to determine if there was a significant effect of brewery on IPA popularity ratings.Table of Participant Ratings for Each Brewery:| Participant | Ore Dock (low) | Black Rocks (mid) | Barrel + Beam (high) ||-------------|----------------|-------------------|----------------------|| 1 | 40 | 30 | 53 || 2 | 42 | 45 | 65 || 3 | 30 | 38 | 64 || 4 | 37 | 32 | 43 || 5 | 23 | 28 | 38 |

The objective is to test whether if there exists a significant effect of brewery on IPA popularity…

Answered: A researcher wanted to know which local…

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 complete the blank problem and or ones with a red x next to it not ones with a green check next to please
20 high school Spanish teachers attended an summer course to improve their listening skills. They took the MLA listening test both before and after the course. Before the course they had a mean of 27.3 with s=8.04. After the course they had a mean of 28.75 with s=2.74. We want to know if the course improves scores. A.) State an appropriate Ho and Ha. B.) Carry out a test. Can you reject at the 5% significance level? at the 1% level?
The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
Which of these are categorical and which are quantitative?
A psychologist wants to test the influence of color on object recognition in 4-year olds. She recruits 25 children and shows them two sets of pictures of everyday objects (variable = picture type), has the children name them, and measures the time it takes (variable = reaction time). She shows the children a color set of pictures first and then shows them a black and white set of pictures. a) What is the independent variable? b) What is the dependent variable? c) What is the second independent variable? d) What is the second dependent variable? e) Is "picture type" a within-subjects or between-subjects variable? f) What scale of measurement is reaction time? g) What scale of measurement is picture type? h) The order of presentation of the picture sets is what kind of variable?
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I NEED THE ANSWER TO THE "NUMBER OF DUMMY VARIABLES" A manager of a local package delivery store believes that too many of the packages were damaged or lost. She extracts a sample of 75 packages with the following variables: the package number (Package), the status of the package (Status: Delivered, Damaged, or Lost), the delivery type (Delivery: Standard, Express, or Same day), and the size of the package (Size: S, M, L, and XL). A portion of the data is shown in the accompanying table. Package Status Delivery Size 1 Damaged Standard M 2 Lost Express L ⋮ ⋮ ⋮ ⋮ 75 Damaged Same day M a)Transform the Delivery variable into dummy variables. Use the most frequent category as the reference category. How many dummy variables should be created? Which category of Delivery is the reference category? Number of dummy variables: ???? Reference Category: Standard Package Status Delivery Size 1 Damaged Standard M 2 Lost Express L 3 Lost Standard S 4 Delivered…
You are responsible for a data analysis exercise in your first job (as a data analyst) after graduating and have downloaded some associated reports. Your first task requires you to write a data dictionary and determine what type of variable the data you are dealing with relates to. Which of the following are categorical variables? Select one: a. The number of marks out of 10 that an employee obtained on the company’s information technology training. b. The number of employees in each division c. The number of years of service of each employee. d. The employee’s tax file number. e. The pro-rata income for all employees within the business/finance division.
Four different beverages are sold at a fast-food restaurant soft drinks, tea, coffee, and bottled water. Answer parts (a) and (b) a. Explain why the type of beverage sold is an example of a categorical variable. Choose the correct answer below OA Type of beverage sold is a categorical variable because the values of the variable arise from a measuring process OB. Type of beverage sold is a categorical variable because the values of the variable can only be placed into categories OC. Type of beverage sold is a categorical variable because the values of the variable arise from a counting process OD. Type of beverage sold is a categorical variable because the values of the variable represent quanteles b. Explain why the type of beverage is a nominal-scaled variable Choose the correct answer below OA Type of beverage sold is a nominal-scaled variable because there are no rankings for the different values of the vanable OB Type of beverage sold is a nominal-scaled variable because the…
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A high school track coach wanted to test whether giving the students an energy drink could affect performance during the 100 meter race. The coach split the 26 boys into two equal sized groups, where Group 1 was given the energy drink and Group 2 was not. The 100 meter race times were recorded during practice and shown in the table below. What inference can be made about the results? Group 1 Group 2 12.2 13 12.5 12.3 13.3 12.8 12.9 13 13 13.8 12.1 13 13 13 13 13 12.1 13 13 13 12.1 13 12.8 13 13 12.6 Mean: 12.7 Mean: 13 Since the simulation shows ( many cases or free cases )? where a mean difference of ( solve for this answer ) or less occurred when the groups were re-randomized, it can be inferred that the mean difference observed in the study was ( very possibly or very unlikely ) ?due to the random assignment of participants into groups, so the results of the study are (…
estion 4 of 16 The number of text messages sent and the number of phone calls made in a sample of 100 students Identify the explanatory variable and the response variable, if possible O Either variable could be the explanatory variable because cach one could be used to predict or explain the other. O Explanatory variable: students; response variable: number of phone calls made O Explanatory variable: number of phone calls; response variable: number of text messages O Explanatory variable: number of text messages; response variable: number of phone calls O Explanatory variable: students: response variable: number of text messages DELL

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