Using traditional methods, it takes 9.7 hours to receive a basic driving license. The new license training method uses computer aided instruction (CAI) has been proposed. A researcher use that technique with 13 students in observed that they had a mean of 9.8 hours with a standard deviation of 1.8. A level of significance of 0.1 will be used to determine if the technique performs differently than the traditional method. Assume the population distribution is approximately normal. make the decision to reject or fail to reject the null hypothesis.
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.
Using traditional methods, it takes 9.7 hours to receive a basic driving license. The new license training method uses computer aided instruction (CAI) has been proposed. A researcher use that technique with 13 students in observed that they had a
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