Question

Assume I give a test with a mean score of 84 and a standard deviation of...

Assume I give a test with a mean score of 84 and a standard deviation of 10. Draw a sketch of a normal distribution centered at the mean of 84 and divide it into 5 regions based on the following grades: The top 10% of scores receive an A The next 20% of scores receive a B The middle 40% of scores receive a C The next 20% of scores receive a D The bottom 10% of scores receive an F

What are the minimum scores on the test that would give a student a A,B,C,D

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
6) In the EI test example from the previous two problems, assume the mean of the...
6) In the EI test example from the previous two problems, assume the mean of the test is 100 and the standard deviation is 11. Using a z-table, what scores would be the top and bottom score to find the a) middle 50% of students b) middle 80% of students c) middle 95% of students? previous questions: 4) Suppose that student scores on an emotional intelligence (EI) test are normally distributed. Using a z-table (normal curve table), what percentage of...
Students taking a standizedvIQ test had a mean score of 100 with a standard deviation of...
Students taking a standizedvIQ test had a mean score of 100 with a standard deviation of 15. Assume that the scores are normally distributed. a) Find the probaility that a student had a score less than 95. b) If 2000 students are randomly selected, how many would be expected to have an IQ score that is less than 90? c) What is the cut off score that would place a student in the bottom 10%? d) A random sample of...
forty students took a test on which the mean score was an 82 and standard deviation...
forty students took a test on which the mean score was an 82 and standard deviation was 7.8. the distribution of the scores followed a normal model and a grade of B or better was assigned to all students who scored 85 or higher. approximately how many grades of B or better were given? (choose closest answer) (a) 8, (b) 10, (c) 14, (d) 28, (e) 35
Show work a) A teacher informs her computational physics class (of 500+ students) that a test...
Show work a) A teacher informs her computational physics class (of 500+ students) that a test was very difficult, but the grades would be curved. Scores on the test were normally distributed with a mean of 25 and a standard deviation of 7.3. The maximum possible score on the test was 100 points. Because of partial credit, scores were recorded with 1 decimal point accuracy. (Thus, a student could earn a 25.4, but not a 24.42.) The grades are curved...
The average score and standard deviation of a biochemistry test were; Mean: 80 Std Dev: 4...
The average score and standard deviation of a biochemistry test were; Mean: 80 Std Dev: 4 What percentage of scores on the test were below 77? Show your calculations. What percentage of scores on the test were above 84? Show your calculations. What percentage of scores on the test were between 77 and 84? Show your calculations. What score on the test did a student earn if that student was at the 65th percentile on that test?
For an Economics test the mean score is 100 and the standard deviation is 10, and...
For an Economics test the mean score is 100 and the standard deviation is 10, and for an Accounting test the mean score is 50 and the standard deviation is 4. You are given the test scores of a student who took both tests. Determine on which test the student had a better score. Enter E if the student did better on the Economics test Enter A if the student did better on the Accounting test Enter S if the...
A humanities professor assigns letter grades on a test according to the following scheme. A: Top...
A humanities professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below the top 12% and above the bottom 63% C: Scores below the top 37% and above the bottom 15% D: Scores below the top 85% and above the bottom 9% F: Bottom 9% of scores Scores on the test are normally distributed with a mean of 68 and a standard deviation of 7.6. Find the minimum score required...
Assume that statistics scores that are normally distributed with a mean 75 and a standard deviation...
Assume that statistics scores that are normally distributed with a mean 75 and a standard deviation of 4.8 (a) Find the probability that a randomly selected student has a score greater than 72. (b) Find the probability that a randomly selected student has a score between 70 and 80. (c) Find the statistics score separating the bottom 99.5% from the top 0.5%. (d) Find the statistics score separating the top 64.8% from the others.
IQ test scores are normally distributed with a mean of 100 and a standard deviation of...
IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. a) Find the IQ scores that represent the bottom 35% . b) Find the IQ score that represents the 3rd Quartile c) Find the IQ score for the top 5%
A humanities professor assigns letter grades on a test according to the following scheme. A: Top...
A humanities professor assigns letter grades on a test according to the following scheme. A: Top 13% of scores B: Scores below the top 13% and above the bottom 60% C: Scores below the top 40% and above the bottom 24% D: Scores below the top 76% and above the bottom 6% F: Bottom 6% of scores Scores on the test are normally distributed with a mean of 65.1 and a standard deviation of 9.2. Find the minimum score required...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT