Homework Answers
The two Stem-and-Leaf plots below are data set for two searate exams, let's call them Exam...
The two Stem-and-Leaf plots below are data set for two searate exams, let's call them Exam scores, and then cam 2 scores. These are fictional exam scores) Exam 2 3 29 4 568 51689 6 357 7 229 679 7 1 3 5 7 80245677 9 038 907 (a) Calculate the mean and the Five Number Summary for these two distributions. (Round to I decimal place if necessary.) Exam 1: Exam 2: Min Qi Median Q3 Max Min 01 Median...
Question 2 3 pts The boxplots below show the distribution of test scores for two classes....
Question 2 3 pts The boxplots below show the distribution of test scores for two classes. Class A Class B 0 10 20 30 40 50 60 70 80 90 100 Test scores Which of the following statements is a valid conclusion that can be drawn from the boxplots? Choose all that apply. Class A and B have approximately the same percentage of students who scored 70 or higher on the test. Class A has a greater percentage of students...
Students taking an Introduction to Macroeconomics class reported the number of credit hours that they were...
Students taking an Introduction to Macroeconomics class reported the number of credit hours that they were taking in the current semester. Summary statistics are shown in the table below. For tuition the college charges $73 per credit hour plus a flat student fee of $34 per semester. For example, a student taking 12 credit hours would pay $34 + $73*(12) = $910 for that semester. Summary Statistics for Credit Hours s min Q1 median Q3 max 14.2 3.2 11 13.9...
Is a statistics class' delivery type a factor in how well students do on the final...
Is a statistics class' delivery type a factor in how well students do on the final exam? The table below shows the average percent on final exams from several randomly selected classes that used the different delivery types. Hybrid Online Face-to-face 55 79 62 55 57 57 61 82 84 99 89 68 56 64 83 57 80 63 81 83 94 58 Assume that all distributions are normal, the three population standard deviations are all the same, and the...
The boxplots below show the distribution of test scores for two classes. Class A Class B...
The boxplots below show the distribution of test scores for two classes. Class A Class B 0 80 90 100 10 20 30 40 50 60 70 Test scores Which of the following statements is a valid conclusion that can be drawn from the boxplots? Choose all that apply. At least 25% of each class earned a B (80 or higher on the exam). Class B has more students than class A. Class A and B have approximately the same...
(1 point) Two statistics teachers both believe that each has the smarter class. To put this...
(1 point) Two statistics teachers both believe that each has the smarter class. To put this to the test, they give the same final exam to their students. A summary of the class sizes, class means, and standard deviations is given below: ni 57, T = 86.4, S1 17.5 n2 = 60, T2 = 81.5, S2 = 18.1 Is there evidence, at an a = 0.05 level of significance, to conclude that there is a difference in the two classes?...
Two statistics teachers both believe that each has the smarter class. To put this to the...
Two statistics teachers both believe that each has the smarter class. To put this to the test, they give the same final exam to their students. A summary of the class sizes, class means, and standard deviations is given below: ni = 45, d = 82.2, 81 = 17.7 n2 = 42, I2 = 77.2, 82 = 19 Is there evidence, at an a = 0.05 level of significance, to conclude that there is a difference in the two classes?...
A professor wanted to determine whether an online homework system improved scores on a final exam....
A professor wanted to determine whether an online homework system improved scores on a final exam. In the fall semester, he taught a class using the online homework system (which meant students did their homework online and received instant feedback about their answers along with helpful guidance). I spring semester, he taught a class without the homework system (which meant students were responsible for doing their homework the old-fashioned way - paper and pencil). The professor made sure to teach...
Due Thu 07/30/2020 11 Is a statistics class' delivery type a factor in how well students...
Due Thu 07/30/2020 11 Is a statistics class' delivery type a factor in how well students do on the final exam? The table below shows the average percent on final exams from several randomly selected classes that used the different delivery types. Face-to-Face Hybrid Online 68 96 63 60 98 64 57 73 61 58 74 61 80 77 70 61 63 92 57 94 91 100 72 72 66 Assume that all distributions are normal, the three population standard...
Unit 6 Lesson 3 Classwork (Adapted from Math Vision Project) Data Distribution A lot of information...
Unit 6 Lesson 3 Classwork (Adapted from Math Vision Project) Data Distribution A lot of information can be obtained from looking at data plots and their distributions. It is important when describing data that we use context to communicate the shape, center, and spread. Shape and spread: Modes: uniform (evenly spread- no obvious mode), unimodal (one main peak), bimodal (two main peaks), or multimodal (multiple locations where the data is relatively higher than others). Skewed distribution: when most data is...
The two Stem-and-Leaf plots below are data set for two searate exams, let's call them Exam scores, and then cam 2 scores. These are fictional exam scores) Exam 2 3 29 4 568 51689 6 357 7 229 679 7 1 3 5 7 80245677 9 038 907 (a) Calculate the mean and the Five Number Summary for these two distributions. (Round to I decimal place if necessary.) Exam 1: Exam 2: Min Qi Median Q3 Max Min 01 Median...
Question 2 3 pts The boxplots below show the distribution of test scores for two classes. Class A Class B 0 10 20 30 40 50 60 70 80 90 100 Test scores Which of the following statements is a valid conclusion that can be drawn from the boxplots? Choose all that apply. Class A and B have approximately the same percentage of students who scored 70 or higher on the test. Class A has a greater percentage of students...
Is a statistics class' delivery type a factor in how well students do on the final exam? The table below shows the average percent on final exams from several randomly selected classes that used the different delivery types. Hybrid Online Face-to-face 55 79 62 55 57 57 61 82 84 99 89 68 56 64 83 57 80 63 81 83 94 58 Assume that all distributions are normal, the three population standard deviations are all the same, and the...
The boxplots below show the distribution of test scores for two classes. Class A Class B 0 80 90 100 10 20 30 40 50 60 70 Test scores Which of the following statements is a valid conclusion that can be drawn from the boxplots? Choose all that apply. At least 25% of each class earned a B (80 or higher on the exam). Class B has more students than class A. Class A and B have approximately the same...
(1 point) Two statistics teachers both believe that each has the smarter class. To put this to the test, they give the same final exam to their students. A summary of the class sizes, class means, and standard deviations is given below: ni 57, T = 86.4, S1 17.5 n2 = 60, T2 = 81.5, S2 = 18.1 Is there evidence, at an a = 0.05 level of significance, to conclude that there is a difference in the two classes?...
Two statistics teachers both believe that each has the smarter class. To put this to the test, they give the same final exam to their students. A summary of the class sizes, class means, and standard deviations is given below: ni = 45, d = 82.2, 81 = 17.7 n2 = 42, I2 = 77.2, 82 = 19 Is there evidence, at an a = 0.05 level of significance, to conclude that there is a difference in the two classes?...
A professor wanted to determine whether an online homework system improved scores on a final exam. In the fall semester, he taught a class using the online homework system (which meant students did their homework online and received instant feedback about their answers along with helpful guidance). I spring semester, he taught a class without the homework system (which meant students were responsible for doing their homework the old-fashioned way - paper and pencil). The professor made sure to teach...
Due Thu 07/30/2020 11 Is a statistics class' delivery type a factor in how well students do on the final exam? The table below shows the average percent on final exams from several randomly selected classes that used the different delivery types. Face-to-Face Hybrid Online 68 96 63 60 98 64 57 73 61 58 74 61 80 77 70 61 63 92 57 94 91 100 72 72 66 Assume that all distributions are normal, the three population standard...
Unit 6 Lesson 3 Classwork (Adapted from Math Vision Project) Data Distribution A lot of information can be obtained from looking at data plots and their distributions. It is important when describing data that we use context to communicate the shape, center, and spread. Shape and spread: Modes: uniform (evenly spread- no obvious mode), unimodal (one main peak), bimodal (two main peaks), or multimodal (multiple locations where the data is relatively higher than others). Skewed distribution: when most data is...
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