An Internet service provider sampled 591 customers and found that 90 of them experienced an interruption...
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An Internet service provider sampled 591 customers and found that 90 of them experienced an interruption in service during the previous month. a. Construct a 84% confidence interval for the proportion of all customers who experienced an interruption. Critical value: %* or t* = Margin of Error: E = Confidence Interval: ( (Enter the positive one.) b. Interpret your result in part (a) in a complete sentence. c. Based on the confidence interval, can you conclude that less than 20% of all customers experienced an interruption? Yes No d. If the confidence level were 98% rather than 84%, would the margin of error be larger or smaller than the result in part (a). Larger Smaller e. If the sample size were 480 rather than 591, would the margin of error be larger or smaller than the result in part (a)? Larger Smaller An Internet service provider sampled 591 customers and found that 90 of them experienced an interruption in service during the previous month. a. Construct a 84% confidence interval for the proportion of all customers who experienced an interruption. Critical value: %* or t* = Margin of Error: E = Confidence Interval: ( (Enter the positive one.) b. Interpret your result in part (a) in a complete sentence. c. Based on the confidence interval, can you conclude that less than 20% of all customers experienced an interruption? Yes No d. If the confidence level were 98% rather than 84%, would the margin of error be larger or smaller than the result in part (a). Larger Smaller e. If the sample size were 480 rather than 591, would the margin of error be larger or smaller than the result in part (a)? Larger Smaller
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