A study was conducted to see if an advertisement campaign would increase market share for Sanka instant
Question:
a. Estimate the population proportion choosing Sanka for the
(i) First purchase
(ii) Second purchase. Find the difference and interpret it.
b. Explain how to interpret the 95% confidence interval.
c. The software output also shows a P-value. State the hypotheses that this P-value refers to in the context of this exercise and give the conclusion of the test when using a significance level of 0.05.
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Related Book For
Statistics The Art And Science Of Learning From Data
ISBN: 9780321997838
4th Edition
Authors: Alan Agresti, Christine A. Franklin, Bernhard Klingenberg
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