Annabelle earned a score of 410 on Exam A that had a mean of 450 and a standard deviation of 40. She is about to take Exam B that has a mean of 43 and a standard deviation of 5. How well must Annabelle score on Exam B in order to do equivalently well as she did on Exam A? Assume that scores on each exam are normally distributed.
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Annabelle earned a score of 410 on Exam A that had a mean of 450 and a standard deviation of 40. She is about to take Exam B that has a mean of 43 and a standard deviation of 5. How well must Annabelle score on Exam B in order to do equivalently well as she did on Exam A? Assume that scores on each exam are
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
