Grade D/F 25 The contingency table shows how a random sample of college freshmen graded the leaders of three types of institutions. At a = 0.05, can you conclude that the grades are related to the institution? Complete parts (a) through (d). Institution Military Religious Media / Press 37 50 21 19 43 29 14 11 22 33 24 (a) Identify the claim and state the null and alternative hypotheses. Ho: Grades are V the institution. Ha: Grades are V the institution. The is the claim. (b) Calculate the test statistic. If convenient, use technology. (Round to three decimal places as needed.) (c) Decide to reject or fail to reject the null hypothesis. Then interpret the decision in the context of the original claim. Choose the correct conclusion below. Click to select your answer(s) and then click Check Answer.
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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