___ , ___ ) How many students are expected to attend their graduation? (Round your answer to the nearest whole number.) Find the probability that 18 or 19
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.
I need help with the problem below.
Suppose that about 85% of graduating students attend their graduation. A group of 25 graduating students is randomly chosen.
- Give the distribution of X.
X ~ ___ ( ___ , ___ ) - How many students are expected to attend their graduation? (Round your answer to the nearest whole number.)
- Find the
probability that 18 or 19 attend. (Round your answer to four decimal places.) - Based on numerical values, would you be surprised if all 25 attended graduation?
Please explain how you got the answers/how you solved the problem, thanks!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
