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Chi-square test for independent of attributes.
A random sample of students is interviewed to determine if there is an association between class and attitude toward corporations? The students were asked if they were "favorable", "neutral", or "unfavorable" toward corporations in general. The data collected also included the class status of each student interviewed. With the following tabulated results, test the hypothesis that there is no difference among students with respect to their attitude about corporations.
Favorable
Neutral
Unfavorable
Freshmen
100
50
70
Sophomores
80
60
Juniors
Seniors
40
90
Identify the null and alternative hypothesis, test statistic, P-value,critical values and state the final conclusion that addreses the original claim:
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A sample of PVC pipes coming off a production line were tested for pipe diameter size. The statistical results (in millimeters) were:
Mention the experimental outcomes. Illustrate out a random variable threat that represents the number of heads occurring on the two tosses.
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