Company A claims that 80% of their customers are very satisfied with the service they receive. To test the claim, a certain group of researchers surveyed 600 customers, using simple random sampling. Among the sampled customers, 438 say they are very satisfied. Assume that the sample is sufficiently large for the relevant test to be validly performed. Based on these findings, can we reject the Company A's hypothesis that 80% of the customers are very satisfied? Use a 0.05 level of significance.
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Company A claims that 80% of their customers are very satisfied with the service they receive. To test the claim, a certain group of researchers surveyed 600 customers, using simple random sampling. Among the sampled customers, 438 say they are very satisfied. Assume that the sample is sufficiently large for the relevant test to be validly performed. Based on these findings, can we reject the Company A's hypothesis that 80% of the customers are very satisfied? Use a 0.05 level of significance.
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