ZuoTi.Pro
Question

1) The grades of students in a class are distributed normally. The average grade of the...

1) The grades of students in a class are distributed normally. The average grade of the students in this class is 65; standard deviation is 2. The students who take the teacher give more points by making "systematic error". What is the passing score since it gives more than 25% of the class score in total? Calculate.

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Solutions Given data, celo o = 2 4 = 65 P(x >x) = 25% = 0.25 P(x-x) = 1-025 = 0,75 PCX LX) - P(Z < 0.6745 ) x = l + Zo x=65+

0 0
Add a comment
Know the answer?
Add Answer to:
1) The grades of students in a class are distributed normally. The average grade of the...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • The distribution of grades in an introductory finance class is normally distributed, with an expected grade...

    The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 65. If the standard deviation of grades is 9, in what range would you expect 95.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 95.00% of the students taking the exam.) 95.00 percent of the grades should fall between the ranges (lower...

  • The distribution of grades in an introductory finance class is normally distributed, with an expected grade...

    The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 65. If the standard deviation of grades is 14, in what range would you expect 90.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 90.00% of the students taking the exam.) 90.00 percent of the grades should fall beween the ranges (lower...

  • A professor at a local university noted that the grades of her students were normally distributed...

    A professor at a local university noted that the grades of her students were normally distributed with a mean of 73 and a standard deviation of 11. Answer the following questions rounding your solutions to 4 decimal places. The professor has informed the class that 7.93 percent of her students received grades of A. What is the minimum score needed to receive a grade of A?

  • The distribution of grades in an introductory finance class is normally distributed, with an expected grade...

    The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 68. If the standard deviation of grades is 15, in what range would you expect 68.26 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 68.26% of the students taking the exam.) 68.26 percent of the grades should fall beween the ranges (lower...

  • The distribution of grades in an introductory finance class is normally distributed, with an expected grade...

    The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 65. If the standard deviation of grades is 5, in what range would you expect 68.26 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 68.26% of the students taking the exam.) Excel Template (Note: This template includes the problem statement as it...

  • The distribution of grades in an introductory finance class is normally distributed, with an expected grade...

    The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 65. If the standard deviation of grades is 14, in what range would you expect 90.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 90.00% of the students taking the exam.) Excel Template (Note: This template includes the problem statement as it...

  • Exam grades in my statics class tend to be normally distributed. I've been keeping long term...

    Exam grades in my statics class tend to be normally distributed. I've been keeping long term records, and the mean grade is a 67, with a standard deviation of 13 (on a of 100 point exam). 9. What is the probability that a student gets a grade lower than a 90? 10. What fraction of the class would be expected to get a grade between 60 and 80? 11. What is the probability that one of my statics sections with...

  • An instructor gives a 100-point examination in which the grades are normally distributed with a mean...

    An instructor gives a 100-point examination in which the grades are normally distributed with a mean of 70 and a standard deviation of 8. (a) What proportion of students will get a score of 80 or higher? (b) If the instructor decides to give an A to students whose scores rank in top 5%, what is the cutoff score?

  • Many states assess the skills of their students in various grades. One program that is available...

    Many states assess the skills of their students in various grades. One program that is available for this purpose is the National Assessment of Educational Progress (NAEP). One of the tests provided by the NAEP assesses the reading skills of twelfth-grade students. In a recent year, the national mean score was 284 and the standard deviation was 37 . Assume that these scores are approximately Normally distributed, N(284 , 37 ). How high a score is needed to be in...

  • The distribution of grades in an introductory finance class is normally distributed, with an expected grade...

    The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 70. If the standard deviation of grades is 10, in what range would you expect 99.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 99.00% of the students taking the exam.) Excel Template (Note: This template includes the problem statement as it...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT