In a science competition between two states, 20 students from each state were selected for the final stage. These students were given the same mathematics, chemistry, and English exams at the same time and under the same conditions. 4 marks for each exam from each state were randomly selected from each of the groups of 20 students, and recorded in the following table: State 1 State 2 Mathematics 98.6 74.2 79.0 94.7 88.6 90.7 90.8 89.6 Chemistry 78.6 88.4 82.1 93.1 93.6 84.2 88.9 96.0 English 92.8 88.9 85.6 83.6 98.4 96.0 78.4 91.1 a) Find summary statistics for the exam marks, across both States, Subjects, and the combination of both variables using the statistical package of your choice. b) Perform a two-way ANOVA to investigate the effect of State and Subject on exam marks and write the conclusion. Plot the interaction if it exists.

In a science competition between two states, 20 students from each state were selected for the final stage. These students were given the same mathematics, chemistry, and English exams at the same time and under the same conditions. 4 marks for each exam from each state were randomly selected from each of the groups of 20 students, and recorded in the following table: State 1 State 2 Mathematics 98.6 74.2 79.0 94.7 88.6 90.7 90.8 89.6 Chemistry 78.6 88.4 82.1 93.1 93.6 84.2 88.9 96.0 English 92.8 88.9 85.6 83.6 98.4 96.0 78.4 91.1 a) Find summary statistics for the exam marks, across both States, Subjects, and the combination of both variables using the statistical package of your choice. b) Perform a two-way ANOVA to investigate the effect of State and Subject on exam marks and write the conclusion. Plot the interaction if it exists.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A vaccine to prevent a severe virus was given to children within the first year of life as part of a drug study. The study reported that of the 3456bchildren randomly assigned the vaccine, 58 got the virus. Of the 1606 children randomly assigned the placebo, 46 got the virus. a. Find the sample percentage of children who caught the virus in each group. Is the sample percentage lower for the vaccine group, as investigators hoped? b. Determine whether the vaccine is effective in reducing the chance of catching the virus, using a significance level of 0.01.The first few steps of the hypothesis-testing procedure are given. Complete the procedure.
Find the 55th percentile
A group of 11 students was selected at random and asked for their high school GPA and their freshmen GPA in college the subsequent year. The results were: Student High School GPA Freshmen GPA 1 2.0 1.6 2 2.2 2.0 3 2.6 1.8 4 2.7 2.8 5 2.8 2.1 6 3.1 2.0 7 2.9 2.6 8 3.2 2.2 9 3.3 2.6 10 3.6 3.0 We would like to know whether there is a linear relationship between the high school GPA and the college freshmen GPA, and we would like to be able to predict the freshmen GPA, if we know that the high school GPA of another student is, say, 3.4. Provide the two requested scatter plots for this data (put college freshman GPA on the Y (vertical) axis!). a) What would be your approximate 95% prediction interval for question (g)? b) Show your scatterplot with the predicted trend line below
A study was conducted of pleas made by 1,025 criminals. Among those criminals, 953 pled guilty, and 395 of them were sentenced to prison. Among the 72 other criminals, who pled not guilty, 59 were sent to prison. Complete (a) through (d). a. What percentage of the criminals pled guilty? % (Round to the nearest tenth as needed.) b. What percentage of the criminals were sent to prison? % (Round to the nearest tenth as needed.) c. Among those who pled guilty, what is the percentage who were sent to prison? % (Round to the nearest tenth as needed.) d. Among those who pled not guilty, what is the percentage who were sent to prison? % (Round to the nearest tenth as needed.) ←
please answer all parts
A pet supply company has surveyed 887 of its customers to determine the types of pets that its customers have. The percent, rounded to the nearest whole number percent, in each category is pictured here. Other 18% Both 15% Cat 26% 18% 15% 26% 41% Dog 41% How many of its 887 customers have just a dog?
Suppose 20% of the students on campus smoke. You select two students at random. In what percentage of samples will both students be smokers?
The director of library services at a college did a survey of types of books (by subject) in the circulation library. Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. Subject Area Percent of Books on Subject in CirculationLibrary on This Subject Number of Books inSample on This Subject Business 32% 267 Humanities 25% 217 Natural Science 20% 222 Social Science 15% 109 All other subjects 8% 73 Using a 5% level of significance, test the claim that the subject distribution of books in the library fits the distribution of books checked out by students. (a) What is the level of significance?State the null and alternate hypotheses. H0: The distributions are different.H1: The distributions are the same.H0: The distributions are the same.H1: The distributions are different. H0: The distributions are the same.H1: The distributions are the same.H0: The…
freshmen business students at a local university produced the results listed below. How many students took history and science, but not music? 2525 took history;2222 took science;2323 took music;1919 took history but not science;1010 took science and music;1212 took history and music;44 took all three
A soap manufacturer is experimenting with several formulas of soap powder and three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows: Formula A: 35, 36, 44, 42, 37, 40 Formula B: 43, 44, 42, 32, 39, 41 Formula C: 46, 47, 40, 36, 45, 49 What is the sum of the ranks for Formula C? Select one: a. 78 b. 79 c. 77 d. 75 e. 80
The FBI wants to determine the effectiveness of their 1010 Most Wanted list. To do so, they need to find out the fraction of people who appear on the list that are actually caught. Step 1 of 2 : Suppose a sample of 283283 suspected criminals is drawn. Of these people, 9393 were captured. Using the data, estimate the proportion of people who were caught after being on the 1010 Most Wanted list. Enter your answer as a fraction or a decimal number rounded to three decimal places.