Question

.    5.130. On a citywide examination the grades were normally distributed with mean 72 and standard...

.    5.130. On a citywide examination the grades were normally distributed with mean 72 and standard deviation 8.?(a) Find the minimum grade of the top 20% of the students. ?

Engineering   Electrical-Engineering   
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
The grades on the final examination given in a large organic chemistry class are normally distributed...
The grades on the final examination given in a large organic chemistry class are normally distributed with a mean of 72 and a standard deviation of 8. The instructor of this class wants to assign an “A” grade to the top 10% of the scores, a “B” grade to the next 10% of the scores, a “C” grade to the next 10% of the scores, a “D” grade to the next 10% of the scores, and an “F” grade to...
The grades of an examination whose mean is 72 and whose standard deviation is 12 are...
The grades of an examination whose mean is 72 and whose standard deviation is 12 are normally distributed. A.) Anyone who scores below 55 will be retested. What percentage does this represent? B.) Those who score in the top 5% are to receive a special commendation. What score must be surpassed to receive this special commendation?
A set of final examination grades in an introductory statistics course is normally distributed, with a...
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 70 and a standard deviation of 9. What is the probability that the student scored below 88 on this exam What is the probability that a student scored between 61 and 92.5 The probability is 5% that a student taking the test scores higher than what grade If the professor grades on a curve --gives A’s to the top 10% of the...
A set of Midterm examination grades in “Decision making under uncertainty” course is normally distributed, with...
A set of Midterm examination grades in “Decision making under uncertainty” course is normally distributed, with a mean of 79 and a standard deviation of 7. Complete parts (a) through (d). a) What is the probability that a student scored below 88 on this exam? b) What is the probability that a student scored between 72 and 94? c) The probability is 15% that a student taking the test scores higher than what grade? d) If the professor grades on...
A set of final examination grades in an introductory statistics course is normally distributed, with a...
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 8.2. (i) What is the probability that a student scored below 91 on this exam? (ii) What is the probability that a student scored between 65 and 89? (iii) Given that 15% of the students scored grade B. What is the cut-off mark for grade B?
A set of final examination grades in an introductory statistics course is normally distributed, with a...
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 72 and a standard deviation of 9. a) What is the probability that a student scored below 89 on this exam? (Round to 4 decimal places as needed.) b) What is the probability that a student scored between 63 and 95? (Round to 4 decimal places ad needed.) c) The probability is 5% that a student taking the test scores higher than...
a set of final examination grades in an introductory statistics course is normally distributed with a...
a set of final examination grades in an introductory statistics course is normally distributed with a mean of 77 and a standard deviation of 8.the probability is 15% that a student taking the test scores higher than what grade. the probability is 15% that a student taking the test scores higher than ?
If, in a class of 50 students, the grades are normally distributed with a mean of...
If, in a class of 50 students, the grades are normally distributed with a mean of 76 and a standard deviation of 10 points, what minimum grade would a student have to get to be considered "unusually" high? (more than two standard deviations above mean)
An instructor gives a 100 point examination in which the grades are normally distributed. The mean...
An instructor gives a 100 point examination in which the grades are normally distributed. The mean is 70 and the standard deviation is 10. If there are 1%A+ . find the lowest possible score to get A+?
A set of final examination grades in a calculus course was found to be normally distributed...
A set of final examination grades in a calculus course was found to be normally distributed with a mean of 69 and a standard deviation of 9. What is the probability of getting a grade of 91 or less on this exam? 0.50 .9927 0.0073 1.00
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT