A study shows that children watched television by an average of 48 hours per week with a standard deviation of 12 hours per week. 1. If a sample of 100 children are randomly selected in Cabancalan Elementary School, find the probability that they watch an average of: a. 45 hours to 50 hours. b. more than 52 hours C. below 46 hours.
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.
A study shows that children watched television by an average of 48 hours
per week with a standard deviation of 12 hours per week.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
