The results shown below are mean productivity measurements (average number of assemblies completed per hour) for a random sample of workers at each of three plants. Research question: Are the mean hourly productivity levels the same for workers in these three plants? Productivity Hourly Productivity of Assemblers in Plant
Please discuss an application of ANOVA that might be undertaken in a workplace. What are the 3 or more treatments? What is the response variable? Could you please describe a scenario and state the hypotheses, the decision and the meaning of the decision. Provide a step-by-step explanation.
1) One particular morning, the length of time spent in the examination rooms is recorded for each patient seen by each physician at an orthopedic clinic. Does the data prove a significant difference in mean times? 2) Perform the chi-square test for a uniform distribution. At alpha = .01, does this sample contradict the assumption that readership is uniformly distributed among these six age groups? 3) At alpha = .05, is there a difference in variances?
11.2 One particular morning, the length of time spent in the examination rooms is recorded for each patient seen by each physician at an orthopedic clinic. Does the data prove a significant difference in mean times? Time in Examination Rooms (Minutes)FIGURE 11.12 Physician 1 Physician 2 Physician 3 Physician 4 34
Given the following data for a two-way ANOVA, identify the sets of null and alternative hypotheses, then use the 0.05 level in testing each null hypothesis Factor B 1 2 3 1 152 158 160 Factor A 151 154 160 2 158
The budget for May called for production of 9,000 units. Actual output for the month was 8,500 units with total direct materials cost of $127,500 and total direct labor cost of $77,775. The direct labor standards call for 45 minutes of direct labor per unit at a cost of $12 per direct labor-hour. The direct materials standards c
See attachment. What do I need to do to make this problem work? ------------------------------------------------------------------------------ A researcher conducted a two-factor research study using two levels of factor A and four levels of factor B with a separate sample of n = 6 subjects in each of the eight treatment co
Shrauger (1972) conducted an experiment that examined the effect of an audience on the performance of two different personality types. Hypothetical data from this experiment are as follows. The dependent variable is the number of errors made by each participant. Alone
Please see attached document.
Suppose that an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline to use. The four grades are below regular, regular, premium, and super premium. The test car made three trial runs on the test track using each of the four grades. Assuming any grade can be used at the
Please, perform an F test for columns A (gender), B (age), and E (overall satisfaction) (in the attached spreadsheet) Please use all the data rows for each of these three columns. (from the Excel table attached) For this and any hypothesis test, I want you to number the five steps as in the book. Here are the 5 ste
Martin Motors has in stock three cars of the same make and model. The president would like to compare the gas consumption of the three cars (labeled car A, car B, and car C) using four different types of gasoline. For each trial, a gallon of gasoline was added to an empty tank, and the car was driven until it ran out of gas. The
Traveler conducts an annual survey in which readers rate their favorite curise ships. The data is analyzed using the ANOVA techniques
Traveler conducts an annual survey in which readers rate their favorite curise ships. Ratings are provided for small ships (carring up to 500 passangers) medium ships (carring 500 to 1500 passangers) and large ships (carring a minimum of 1500 passengers). The following data shows the service ratings for eight ramdomly selected
The four conditions are rock, heavy metal, country, and classical music. The dependent variable is the height of each plan after 2 weeks. The data from this experiement were examined using an ANOVA and the results are summarized in the following table. Source SS df MS Between Treatment 72 ___
Full question attached. I need help to determine the null and alterative hypotheses and when to reject the null. Also I need to know if there is sufficient evidence to support the claim that women in the different categories have different mean blood pressure levels? ================== Analysis of variance One-way ANOVA Sy
INSTRUCTIONS: Include a "summary statement" for each hypothesis test, one for the ANOVA hypothesis test, and another "summary statement" for the multiple comparison results when the ANOVA null hypothesis is rejected. FACTS: A company sells identical soap in four different packages at the same price. The sales for each pac
ANOVA hypothesis test and a summary statement I need up solving this problem dealing with ANOVA hypothesis test and a summary statement. I've stated the problem below and have attached an excel spread sheet containing the problem and data. INSTRUCTIONS: Include a "summary statement" for each hypothesis test, one for
See attached for proper formatting Assignment 2: Mixed Problems 1. In a one-way ANOVA, if the test is conducted and the null hypothesis is rejected, what does this indicate? (2 pts) A. All the population means are equal B. At least one of the population means are different C. The normal distribution should b
Give an example of how you could/would apply a hypothesis test using ANOVA to compare more than two independent population means? State the null and alternate hypotheses in both words and symbols.You do not need to complete the entire five step process using actual numbers.
Oxnard Petro, Ltd., has three suppliers of catalysts. Orders are placed with each supplier every 15 working days, or about once every 3 weeks. The delivery time (days) is recorded for each order over 1 year. Are the main effects significant? Is there an interaction? Deliveries2 Supplier 1 Supplier 2 Supplier 3 Qtr 1 12 10 16
Cris Turlock owns and manages a small business in San Francisco, CA. The business provides breakfast and brunch food, via carts parked along sidewalks, to people in the business district of the city. Being an experienced businessperson, Cris provides incentives for the salespeople operating the food carts. This year, she pl
Describe the requirements that must be met before an ANOVA test can be used. Discuss what the researcher should do if one of these requirements is not met.
An experimenter has investigated the effects of cigarette smoking on learning. Two levels of the smoking variable were used (smoked, did not smoke). There are also two levels of the learning variable (intentional learning and incidental learning). 1) Practice the two-way between-subjects ANOVA on these data. 2) Interpre
1. You want to prove that a population mean is not 7. Data is ratio and a large sample size will be used (n = 225). When the sample is done the sample mean is computed to be 7.2 and the sample standard deviation is 1.5. Test the hypothesis using an alpha of 5%. Use formal hypothesis testing and compute the p-value. 2.
Please see the attached file. Question: Sample size Sample mean Sample variance 66 211.2 2862.1 119 198.6 2122.9 95 214 2125.4 110 217.9 2043.7 will do a one-way, independent-samples ANOVA test of equality of the population means, which uses the statistic
Consider a large chain of supermarkets that sell their own brand of potato chips in addition to many other name brands. Management would like to know whether the type of display used for the store has any effect on sales. Because there are four types of displays being considered, management decides to choose 24 similar stores to
The following data are for three (3) groups of subjects who are exposed to three (3) different methods of reinforcement. The dependent variable is the number of correctly identified nonsense syllables. Test the appropriate hypothesis at .05. A) State the hypothesis B) Set the criteria for Ho C) Complete the ANOVA and compute the test statistic D) Compute w2 (w squared). E) Interpret the results ... [See the attached questions file.]
The following data are for three (3) groups of subjects who are exposed to three (3) different methods of reinforcement. The dependent variable is the number of correctly identified nonsense syllables. Test the appropriate hypothesis at .05. A) State the hypothesis B) Set the criteria for Ho C) Complete the ANOVA and compu
The real world problem is to sample 12 statistic students to determine if the number of hours spent studying for Test 9 contribute to attaining a passing score. The dependent variable is the test 9 scores and the independent variable is the hours. The independent variable has three levels of study: Group 1: Independent st
Do graduates of undergraduate business programs with different majors tend to earn disparate average starting salalries? Consider the data in the attached file. a. Is there any reason to doubt the equal variance assumption made in the one-way ANOVA model in this particular case? Support your response to this question. b. A
Please see the attached file for better table format. ) Fill in the missing values in following ANOVA table Source df SS MS F Factor 346.2 115.4 20.79 Error 16 Total Answer a. In the above ANOVA table, is the factor significant at 5% level of significant? 4) A regression model relating x, number of sal
Please step by step and no excel. **All work shown (step by step), in simple terms please!!! No excel, just formulas**. 1) Fill in the missing values in following ANOVA table Source df SS MS F Factor 5 205.5 Error 637 Total 25 Answer a. In the above ANOVA table, is the factor significant at 5% level