The marketing division of a news agency took a survey of 2,540 randomly chosen people, asking them the following 2 questions: (1) "Have you visited our website this week?", and (2) "What is your age group?"   Accessed the website Age Yes No Less than 20 years 470 159 20-39 years 565 130 40-59 years 420 169 60 or more years 509 118 (a) Identify the appropriate null and alternative hypotheses: A. H0: p1 = p2 = 1/2 vs. Ha: at least one of the p's is different from 1/2 B. H0: p1 = p2 = p3 = p4 = 1/4 vs. Ha: at least one of the p's is different from 1/4    C. H0: Online news viewing is related to age vs. Ha: Online news viewing is not related to age D. H0: Online news viewing is not related to age vs. Ha: Online news viewing is related to age (b) The test statistic is 9.731. What is the p-value? (Use 4 decimals.)  (c) What is the appropriate conclusion for ? = 0.05?  (Reject Ho/ Dont reject). There is (sufficient/ insufficient) evidence that online news viewing (is/ is not) related to age.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.