Question

In: Math

Let n1equals100​, Upper X 1equals50​, n2equals100​, and Upper X 2equals30. Complete parts​ (a) and​ (b) below....

Let n1equals100​, Upper X 1equals50​, n2equals100​, and Upper X 2equals30. Complete parts​ (a) and​ (b) below. a. At the 0.01 level of​ significance, is there evidence of a significant difference between the two population​ proportions?

a) Calculate the test​ statistic, Upper Z Subscript STAT​, based on the difference p1minusp2. The test​ statistic, Upper Z Subscript STAT.

b) While either a standardized normal distribution table or technology may be used to calculate the​ p-value, for this​ exercise, use technology. Identify the value of the​ p-value from your technology​ output.

c. Construct a 95​% confidence interval estimate of the difference between the two population proportions.

Solutions

Expert Solution

a)

c)


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