You study for an exam, but due to the fact that you waited too long, you only learn 40% of the material. The exam is all multiple choice, with each question having 6 choices. a) If you come across a question for which you don't know the answer, what's the probability of getting the answer right? b) If you come across a question for which you do know the answer, what's the probability of getting it right (hint: don't “over think” this - what does it mean if you know the answer...)? c) What is the overall probability of getting any question correct?
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.
You study for an exam, but due to the fact that you waited too long, you only learn 40% of the material. The
exam is all multiple choice, with each question having 6 choices.
a) If you come across a question for which you don't know the answer, what's the
the answer right?
b) If you come across a question for which you do know the answer, what's the probability of getting it
right (hint: don't “over think” this - what does it mean if you know the answer...)?
c) What is the overall probability of getting any question correct?
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