If the final averages form semester 1 and 2 are assumed to be normally distributed with qual variances. Which of the following is the appropriate set of hypotheses? A. Ho: H1- H2S O vs HA: H1 - H2>0 B. Ho: H1 - H220 vs HA: H1 -42 <0 C. Ho: H1 - H2 = 0 vs HA: H1 - Hz # 0 D. Ho: H1- H2 # 0 vs HA: 1 - H2 = 0 . What is the computed test statistics for the appropriate test? A. z = 1.9964 B. t 0.8944 C. t 1.0018 D. z = 0.5009 . What is the correct decision for the appropriate test at a 0.05 level of significance when the population variances are assumed to be equal?
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.
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