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.
![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.
2. If a sample of 150 children are selected in Barangay Cabancalan, find the
probability that they watch an average of:
a. 45 hours to 50 hours.
b. more than 49 hours
c. below 46 hours.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F17dec5f6-95ac-4f7f-80f6-af2064cad3b8%2F55da3766-b667-48db-951b-5dd74ad6fcf1%2Fltrejjj_processed.jpeg&w=3840&q=75)
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