departamental examination in statistics given to 500 students, the mean score was 75 with a student deviation of 8. If the scores were approximately normally distributed. A certain population has a mean of 200 and a standard deviation of 50. If all random samples of size 100 are drawn from this population, the resulting sampling distribution of X will have a mean of a.40 B.2 c.20 d.200
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.
In a departamental examination in statistics given to 500 students, the
A certain population has a mean of 200 and a standard deviation of 50. If all random samples of size 100 are drawn from this population, the resulting sampling distribution of X will have a mean of
a.40
B.2
c.20
d.200
Step by step
Solved in 2 steps