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Direct Satellite Television It is believed that 25% of U.S. homes have a direct satellite television receiver. Round up your final answers to the next whole number. Part: 0 / 2 Part 1 of 2 How large a sample is necessary to estimate the true population of homes that have a direct satellite television receiver with 90% confidence and within 5 percentage points? 1 = X 5 Part: 1 / 2 Part 2 of 2 How large a sample is necessary if nothing is known about the population? 1 =