The following formula can be used to find the specific value of the variable in a data set that corresponds to a particular value of the standard normal variable: X = z ∙ σ + μ

Q: The table below refers to a survey of senior high school students in Dayton, Ohio. Cigarette use Yes…

A: Obtain the value of the test statistic. The value of the test statistic is obtained below:

Q: What does am/n mean ?

A: Let the given expression be y -y = amnThis means that, power to the a is in fraction which can be…

Q: A clinical study was conducted on a medicine and the data obtained as follows: calculate Sensitivity…

A: It is given that: For "Diseased":True Positive= 1000True Negative= 50For  "Non-Diseased": True…

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.