Statistics Homework Solutions
Problem
#6796

Working with proportion of population given mean, standard deviation and a subject's score.

mean=76, standard deviation=12; Subject Q had a score of 70.

a. What proportion of the population scored below Q?
b. If you changed the mean to 100 and the standard deviation to 10, what would Q's score be?


Solution Summary

The solution calculates probability for a normal distribution

Solution
What is this?
By OTA - Overall OTA Rating
Purchase Cost Now
$2.19 CAD (was ~$3.99)
Included in Download
  • Plain text response
Why you can trust BrainMass.com
  • Your Information is Secure
  • Best Online Academic Help Service
  • Students find real academic Success
Related Solutions
  • What is a z-score and how is it used in statistics? - Can you give me an example?
  • t-scores and z-scores - On a test whose distribution is approximately normal with a mean of 50 and a standard deviation of 10, the results for three students were reported as follows: Stud ...
  • Z score and raw score conversion - Let x be a random variable that represents the length of time it takes a student to write a term paper for Dr. Adam's Sociology class. After interviewing many students, it was found that x has an app ...
  • Find IQ scores - Assume that adults have normally distributed IQ scores with a mean of 100 and a standard deviation of 15 find the probability that a randomly selected adult has an IQ score between 67 and 133. P(67 ...
  • Confidence Intervals - A cutoff score of 79 has been established for a sample of scores in which the mean is 65. If the corresponding z-score is 1.4 and the scores are normally distributed, what is the standard deviation?
Browse