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Describe an appropriate null hypothesis

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A certain soft drink bottler claims that less than 20% of its customers drink another brand of soft drink on a regular basis. A random sample of 100 customers yielded 18 who did in fact drink another brand of soft drink on a regular basis. Do these sample results support the bottler's claim?  (Use a level of significance of 0.05.)

(a) Describe an appropriate null hypothesis, alternative hypothesis. 

(b) Calculate the test statistic and P-value

Reference no: EM132195995

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