Question

A distribution of scores on a math exam has a mean of 88 and a standard...

A distribution of scores on a math exam has a mean of 88 and a standard deviation of 12. The instructor would like to curve the exam by adding 2 points to all exams. What will the new mean, variance, and standard deviation be (show your work – you may type, hand write, or take a picture of a hand-written solution)?

What is the new mean, variance, and standard deviation?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
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
Similar Questions
Exam scores in a MATH 1030 class is approximately normally distributed with mean 87 and standard...
Exam scores in a MATH 1030 class is approximately normally distributed with mean 87 and standard deviation 5.2. Round answers to the nearest tenth of a percent. a) What percentage of scores will be less than 93? % b) What percentage of scores will be more than 80? % c) What percentage of scores will be between 79 and 88? %
A math professor notices that scores from a recent exam are Normally distributed with a mean...
A math professor notices that scores from a recent exam are Normally distributed with a mean of 65 and a standard deviation of 9. (a) What score do 25% of the students exam scores fall below? (b) Suppose the professor decides to grade on a curve. If the professor wants 16% of the students to get an A, what is the minimum score for an A?
A math professor notices that scores from a recent exam are normally distributed with a mean...
A math professor notices that scores from a recent exam are normally distributed with a mean of 72 and a standard deviation of 5. (a) What score do 75% of the students exam scores fall below? Answer: (b) Suppose the professor decides to grade on a curve. If the professor wants 2.5% of the students to get an A, what is the minimum score for an A? Answer:
A math professor notices that scores from a recent exam are Normally distributed with a mean...
A math professor notices that scores from a recent exam are Normally distributed with a mean of 72 and a standard deviation of 8. Suppose the professor decides to grade on a curve. If the professor wants 0.15% of the students to get an A, what is the minimum score for an A?
The scores on the exam public health professionals take to be certified follows a normal distribution...
The scores on the exam public health professionals take to be certified follows a normal distribution with a mean score of 75 points and a standard deviation of 7 points. What is the probability someone scores 71.5 or more on the exam?
Estimating Mean SAT Math Score The SAT is the most widely used college admission exam. (Most...
Estimating Mean SAT Math Score The SAT is the most widely used college admission exam. (Most community colleges do not require students to take this exam.) The mean SAT math score varies by state and by year, so the value of µ depends on the state and the year. But let’s assume that the shape and spread of the distribution of individual SAT math scores in each state is the same each year. More specifically, assume that individual SAT math...
Test scores on a particular exam have a mean of 77 and standard deviation of 5,...
Test scores on a particular exam have a mean of 77 and standard deviation of 5, and that they have a bell-shaped curve. Suppose you take numerous random samples of size 100 from this population. Describe the shape and give the mean and standard deviation of the resulting frequency curve. Explain.
9. The distribution of CHE 315 Exam I scores is nearly normal with a mean of...
9. The distribution of CHE 315 Exam I scores is nearly normal with a mean of 72.6 points, and a standard deviation of 4.78 points. The test score of the top 5% of students in the class is ___________ and higher
The scores on the exam public health professionals take to be certified follows a normal distribution...
The scores on the exam public health professionals take to be certified follows a normal distribution with a mean score of 75 points and a standard deviation of 7 points. What is the probability someone scores between 60 and 70? Round your answer to 4 decimal places.
The scores on a college entrance exam have an approximate normal distribution with mean, µ =...
The scores on a college entrance exam have an approximate normal distribution with mean, µ = 75 points and a standard deviation, σ = 7 points. About 68% of the x values lie between what two values? What are the z-scores?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT