Formula 1 Formula 2 Formula 3 Formula 4 64 46 23 38 65 42 32 25 70 52 45
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- Pepsi Co. Pvt Ltd is planning to produce a new energy drink. For this purpose, a pilot study was conducted using four different energy drinks formula. They were tested on 3 different sets of people and the reactions in energy level of the people were measured forming four groups. Using the data (measured energy level values) provided below, test whether there is difference in the four energy drinks. The data is as shown in Table.
|
Formula 1 |
Formula 2 |
Formula 3 |
Formula 4 |
|
64 |
46 |
23 |
38 |
|
65 |
42 |
32 |
25 |
|
70 |
52 |
45 |
37 |
Table
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- A company wishes to evaluate the effect of package design on one of its products, a certain brand of cereal. The four package designs are to be tested in different stores throughout a large city. There are 20 stores available for the study. The amount of cereal sold is known to vary depending on the size of the stores. The 20 stores are divided into five groups of four stores each by size. The following sales figures ($1000s) were obtained after a 1-month period. Stores Design A Design B Design C Design D 1 40 33 37 38 2 45 27 32 40 3 43 31 30 41 4 44 38 40 42 5 56 45 49 42 Enter the above data into a suitable software and then conduct an analysis of variance without blocking to test whether there is evidence of a significant difference in me sales different packa designs. Use alpha = 0.01. What are the sums of squares for treatments? Please provide your answer to the nearest two decimal places.As an admissions counselor, I am interested in understanding whether or not there is a difference in stress levels not only between different majors but also between different classes (Freshman v. Seniors). I gather the following data from students from three majors (Psychology, Chemistry, and Engineering), that are in their freshmen or senior years and ask them about their stress levels (scale of 1-10, with lower numbers meaning less stress). Using the data below, test whether there are effects of class, major, or an interaction between them at an alpha of 0.05. Psychology Chemistry Engineering Freshmen 3, 4, 4, 2, 4 4, 5, 7, 8, 4 5, 7, 7, 8, 5 Senior 4, 5, 5, 3, 5 8, 5, 6, 7, 7 9, 9, 8, 7, 9 What is the critical F value for major? ___________ What is the critical F value for class? ___________ What is the critical F value for the interaction between major and class? ___________Juvenile ground squirrels respond to predators by making “alarm calls” that can alert others to danger. A biologist conducted a study to investigate how squirrels respond to these alarm calls: run to burrow or freeze. The biologist played recordings of alarm calls for three samples of ground squirrels, grouped by age, and observed the squirrels’ responses. The data for the three age levels are shown in the table. Run to Burrow Freeze Total 1 to 5 Days Old 21 18 39 6 to 15 Days Old 16 24 40 16 to 25 Days Old 12 7 19 Total 49 49 98 If ground squirrels at different ages respond to the alarm signals in the same proportions, what would be the expected count for 6- to 15-day-old squirrels that freeze?
- A special education teacher wants to test the effects of online learning. A class of ten children are given traditional instruction for the first month of class. The amount of student-teacher interaction was assessed—i.e., the average number of seconds it took for the student to respond when called upon. Beginning the second month, laptop computers are provided to each student. The data below show the averages for each student. Did it take significantly longer for the students to respond when using the laptop. Test the research using a two-tailed test and α = .05. Child no.. Traditional. With lap-top 1. 2. 3 2. 5. 4 3. 7. 9 4. 2. 3 5. 3 . 5 6. 7 . 7 7.…x Resorts & Spas, a magazine devoted to upscale vacations and accommodations, published its Reader's Choice List of the top 20 independent beachfront boutique hotels in the world. The data shown are the scores received by these hotels based on the results from Resorts & Spas' annual Readers' Choice Survey. Each score represents the percentage of respondents who rated a hotel as excellent or very good on one of three criteria (comfort, amenities, and in-house dining). An overall score was also reported and used to rank the hotels. The highest ranked hotel, the Muri Beach Odyssey, has an overall score of 94.3, the highest component of which is 97.7 for in-house dining. If required, round your answer to three decimal places. Click on the datafile logo to reference the data. Hotel Overall Comfort Amenities In-House Dining Muri Beach Odyssey 94.3 94.5 90.8 97.7 Pattaya Resort 92.9 96.6 84.1 96.6 Sojourner's Respite 92.8 99.9 100.0 88.4…A researcher was interested in the effect of outdoor activity on mood. She hypothesized that spending time doing outdoor activity like walking in the forest would increase mood. She recruited 10 participants in her study. She had each participant walk a 2 km trail in the forest. Before and after the walk she had them rate their mood on a 5-pt Likert scale from 1 - very bad mood to 5 - very good mood. The data are reported in the table below. Mood Before Mood After 4 3 1 4 1 4 4 14 4 Copy or type the data into an Excel spreadsheet. Run the appropriate test to test the hypothesis at the 5% significance level (a = 0.05). On the excel spreadsheet, type your Step 5 answer including the numerical answer in formal APA format notation and the conclusion written in a sentence.
- The administrators of a Faculty A were interested to understand personal characteristics of their students. They decided to conduct a survey and managed to get randomly 1625 students to respond to the survey. The same survey has been conducted for 3 years in a row and a summary report on students’ characteristics was produced. The first part of the survey was asking demographics questions on the students. The data in Table 1 show eight variables, each describing a different characteristic of the students taking the survey. For the data in the table, the description of the data is as follows: ID : An identifier for each of the individuals in the study. Gender : M for male and F for female Mathematics : To measure how much the student likes Mathematics courses (Really Don’t Like it, Not too much, I like it, Absolutely love it) Exercise : Number of times spent exercising per week Games : Number of hours spent playing online games per week GPA…Pls helpAn industrial psychologist hired by a leading accounting firm wanted to know if the average number of hours worked per week at the firm was significantly different from the national average of 52 hours for accountants. The industrial psychologist randomly sampled n=16 people from different divisions within the firm, and calculated the average number of hours they worked per week over a three-month period. The dependent variable in this study is the number of hours worked per week. The data he obtained were: 54, 48, 68, 53, 60, 45, 57, 62, 71, 60, 55, 63, 68, 64, 56, 60
- A company wishes to evaluate the effect of package design on one of its products, a certain brand of cereal. The four package designs are to be tested in different stores throughout a large city. There are 20 stores available for the study. The amount of cereal sold is known to vary depending on the size of the stores. The 20 stores are divided into five groups of four stores each by size. The following sales figures ($1000s) were obtained after a 1-month period. Stores Design A Design B Design C Design D 1 40 33 37 38 2 45 27 32 40 3 43 31 30 41 4 44 38 40 42 5 56 45 49 42 Enter the above data into a suitable software and then conduct an analysis of variance without blocking to test whether there is evidence of a significant difference in mean sales of different package designs. Use alpha=0.01. What is the conclusion for the null hypothesis that all treatment means are equal? O Do not reject HO. There is sufficient evidence to conclude that the average sales for all stores are not…A company wishes to evaluate the effect of package design on one of its products, a certain brand of cereal. The four package designs are to be tested in different stores throughout a large city. There are 20 stores available for the study. The amount of cereal sold is known to vary depending on the size of the stores. The 20 stores are divided into five groups of four stores each by size. The following sales figures ($1000s) were obtained after a 1-month period. Stores Design A Design B Design C Design D 1 40 33 37 38 2 45 27 32 40 3 43 31 30 41 4 44 38 40 42 5 56 45 49 42 Enter the above data into a suitable software and then conduct an analysis of variance with blocking (analyze this data as a complete block design) to test further whether there is evidence of a significant difference in mean sales of different package designs. Use alpha=0.01. What are the sums of squares for Blocks? Provide your answer to the nearest 2 decimal places.An automobile manufacturer wants to compare the lifetime of two brands of tire. She obtains a sample of five tires of each brand. On each of five cars, she mounts one tires of each brand on each from wheel. The cars are driven until only 20% of the original tread remains. The distances, in thousands of miles, for each tire are presented in the following table. Sample1=Brand A, Sample2=Brand B Car BrandA BrandB 1 36.1 42.5 2 24.1 32.8 3 39.8 38.8 4 41.2 35.5 5 28.5 29.3 Determine if the alternative hypothesis is "right", "left" or "two-tailed" to test that the mean lifetime of Brand B tires is greater than that of Brand A?
