Homework Answers
Standard normal variate is
Z = (X - Mean) / SD
0.5 = (X - 84) / 10
X = 0.5*10 + 84
= 89
Your grade on the test is 89
Add Answer to:
Quiz: Midterm & help file The mean grade on a French test was 84 with a...
THINKING/COMMUNICATION 7. A post-secondary class has 600 students. The mean grade on their midterm exam is...
THINKING/COMMUNICATION 7. A post-secondary class has 600 students. The mean grade on their midterm exam is 70%, with a standard deviation of 15. a. Find the Z-score of a student who scored 80% on his exam. [2 marks] b. Find the percentage of students who failed the exam. [3 marks] c. How many students failed the exam (i.e. scored less than 49%)? [1 mark] d. Your friend claims he scored in the 99th percentile on his exam. What mark must...
In a large class, there were 205 students who wrote both the midterm and the final...
In a large class, there were 205 students who wrote both the midterm and the final exam. The standard deviation of the midterm grades was 15, and that of the final exam was 18. The correlation between the grades on the midterm and the final was 0.58 Based on the least squares regression line fitted to the data of the 205 students, if a student scored 21 points below the mean on the midterm, then how many points below the...
A teacher sets a test for a class of students. The teacher decides to analyse the...
A teacher sets a test for a class of students. The teacher decides to analyse the test results using statistical analysis techniques. Given the table of results below, complete the following tasks: CLASS RESULTS STUDENTS TEST SCORE% Thomas 74 Charles 55 Sarah 81 Mathew 68 James 71 Jessica 74 Daniel 86 Jack 66 Emma 73 Laura 72 Joshua 84 Alice 68 Samantha 70 a). Calculate the Mean of the test scores. b). Calculate the Median of the test scores. c)....
A teacher sets a test for a class of students. The teacher decides to analyze the...
A teacher sets a test for a class of students. The teacher decides to analyze the test results using statistical analysis techniques. Given the table of results below, complete the following tasks: CLASS RESULTS Student Test Score (%) Thomas 74 Charles 55 Sarah 81 Mathew 68 James 71 Jessica 74 Daniel 86 Jack 66 Emma 73 Laura 72 Joshua 84 Alice 68 Samantha 70 a). Calculate the Mean of the test scores. b). Calculate the Median of the test scores....
Question Help A student's course grade is based on one midterm that counts as 10% of...
Question Help A student's course grade is based on one midterm that counts as 10% of his final grade, one class project that counts as 20% of his final grade, a set of homework assignments that counts as 50% of his final grade, and a final exam that counts as 20% of his final grade. His midterm score is 77, his project score is 92, his homework score is 77, and his final exam score is 69 What is this...
1. The grade of a Math Quiz is normally distributed with its mean, 81 and standard...
1. The grade of a Math Quiz is normally distributed with its mean, 81 and standard deviation, 8.4. If a student is randomly selected in class, what is the probability that his or her score will be higher than 90? 2. The historical data of a company's annual sales is normally distributed with its mean, $330 million and its standard deviation, $45 million. Find the probability that the company's sales will be between $300 million and $ 400 next year?
A student's course grade is based on one midterm that counts as 10% of his final...
A student's course grade is based on one midterm that counts as 10% of his final grade, one class project that counts as 10% of his final grade, a set of homework assignments that counts as 35% of his final grade, and a final exam that counts as 4545% of his final grade. His midterm score is 65 his project score is 92 his homework score is 89 and his final exam score is 60. What is his overall final...
A student's course grade is based on one midterm that counts as 20% of his final...
A student's course grade is based on one midterm that counts as 20% of his final grade, one class project that counts as 25% of his final grade, a set of homework assignments that counts as 45% of his final grade, and a final exam that counts as 10% of his final grade. His midterm score is 60, his project score is 90, his homework score is 92, and his final exam score is 78. What is his overall final...
The mean and standard deviation of test scores are 80 and 5 respectively. Assuming a bell-shaped...
The mean and standard deviation of test scores are 80 and 5 respectively. Assuming a bell-shaped distribution, what percentage of test-takers scored above 90?
i,, Question Help * 2.3.41 Percent of final grade 15 Score Homework83 Quiz Quiz Project Final...
i,, Question Help * 2.3.41 Percent of final grade 15 Score Homework83 Quiz Quiz Project Final Exam 85 The scores and their percent of the final grade for a statistics student are given. What is the student's weighted mean score? The student's weighted mean score is (Simplify your answer. Round to two decimal places as needed.)
THINKING/COMMUNICATION 7. A post-secondary class has 600 students. The mean grade on their midterm exam is 70%, with a standard deviation of 15. a. Find the Z-score of a student who scored 80% on his exam. [2 marks] b. Find the percentage of students who failed the exam. [3 marks] c. How many students failed the exam (i.e. scored less than 49%)? [1 mark] d. Your friend claims he scored in the 99th percentile on his exam. What mark must...
In a large class, there were 205 students who wrote both the midterm and the final exam. The standard deviation of the midterm grades was 15, and that of the final exam was 18. The correlation between the grades on the midterm and the final was 0.58 Based on the least squares regression line fitted to the data of the 205 students, if a student scored 21 points below the mean on the midterm, then how many points below the...
A teacher sets a test for a class of students. The teacher decides to analyze the test results using statistical analysis techniques. Given the table of results below, complete the following tasks: CLASS RESULTS Student Test Score (%) Thomas 74 Charles 55 Sarah 81 Mathew 68 James 71 Jessica 74 Daniel 86 Jack 66 Emma 73 Laura 72 Joshua 84 Alice 68 Samantha 70 a). Calculate the Mean of the test scores. b). Calculate the Median of the test scores....
Question Help A student's course grade is based on one midterm that counts as 10% of his final grade, one class project that counts as 20% of his final grade, a set of homework assignments that counts as 50% of his final grade, and a final exam that counts as 20% of his final grade. His midterm score is 77, his project score is 92, his homework score is 77, and his final exam score is 69 What is this...
1. The grade of a Math Quiz is normally distributed with its mean, 81 and standard deviation, 8.4. If a student is randomly selected in class, what is the probability that his or her score will be higher than 90? 2. The historical data of a company's annual sales is normally distributed with its mean, $330 million and its standard deviation, $45 million. Find the probability that the company's sales will be between $300 million and $ 400 next year?
i,, Question Help * 2.3.41 Percent of final grade 15 Score Homework83 Quiz Quiz Project Final Exam 85 The scores and their percent of the final grade for a statistics student are given. What is the student's weighted mean score? The student's weighted mean score is (Simplify your answer. Round to two decimal places as needed.)
Most questions answered within 3 hours.
-
How many ways can 2 people be chosen and arranged in a straight
line if there...
asked 37 minutes ago -
(Problem 1d). Leandro has 16 hours per day that he can allocate
to work or leisure....
asked 1 hour ago -
Morganton Company
makes one product and it provided the following information to help
prepare the master...
asked 1 hour ago -
2Al + 3Cl2 --> 2AlCl3
If one mole Al is reacted w two moles Cl2, how...
asked 2 hours ago -
1. You will see some trends in the movement of each currency vs.
the US Dollar....
asked 2 hours ago -
9. (9 pts) An investor with a stock portfolio worth several
hundred thousand dollars sued his...
asked 3 hours ago -
Which statement is true?
a. Unless directed otherwise, the computer automatically
executes C. statements one before...
asked 3 hours ago -
When a new company is considering Speed to Market for a product
launch, which would provide...
asked 4 hours ago -
bacteria and their metabolites could either promote or protect from
cancer. Explain one of these cases...
asked 4 hours ago -
Use the sample data and confidence level given below to complete
parts (a) through (d).
A...
asked 4 hours ago -
During laser vision correction, a brief burst of 193 nm
ultraviolet light is projected onto the...
asked 4 hours ago -
1 ) How well does the initial speed, v0,calculated from Equation
4 agree with the value...
asked 4 hours ago