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Question 8 (1 point) Normally distributed data are normally referred to as 1) bell-shaped. 2) asymmetrical 3) skewed 4) 134%,ktxl. Question 9 (1 point) What is the null hypothesis for a Chi-square test? 1) The two variables have a significant relationship. 2) The two variables have equal means. 3) The two variables are independent. 4) The two variables are dependent.

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8.normal distribution is a common probability distribution . It has a shape often referred to as a "bell curve." or bell shaped

Many everyday data sets typically follow a normal distribution: for example, the heights of adult humans, the scores on a test given to a large class, errors in measurements.

9.Chi-Square Test of Independence. The Chi-Square testof independence is used to determine if there is a significant relationship between two nominal (categorical) variables. The frequency of each category for one nominal variable is compared across the categories of the second nominal variable.

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