A random sample of 150 observations was classified into the categories shown in the table below. Category

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A random sample of 150 observations was classified into the categories shown in the table below. Category 1 2 3 4 5 ni 28 35 33 25 29

a. Do the data provide sufficient evidence that the categories are not equally likely? Use a = .10.

b. Form a 90% confidence interval for p2, the probability that an observation will fall in category 2. Applying the Concepts—Basic

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