3 Answered Questions for the topic Elementary Statistics -The Normal Curve

Elementary statistics The normal curve

03/02/16

The results of an exam in a history class are normally distributed with a mean of 60 and a standard deviation of 6
a. What is the probability that a student who took the exam will have a score between 57 and 63? b. What is the probability that a student who took the exam will have a score between 45 and 75?
Follows • 2
Expert Answers •1
Elementary statistics The normal curve

03/02/16

An exam is given to all students entering school. The scores are approximately normally distributed with a mean of 100 and a standard deviation of 15
a. What percentage of the students have scores between 85 and 115? b.What percentage of the students have scores between 70 and 130? c. What percentage of the students have scores between 55 and... more
Follows • 2
Expert Answers •1
Elementary statistics The normal curve

03/02/16

The scores on an exam for a class of 50 students were approximately normally distributed with a mean of 40 and a standard deviation of 5
a. Approximately how many of the students scored above 45? b. Approximately how many of the students scored above 50? c. Approximately how many of the students scored below 35? d. Approximately... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.