please help with hw

In a random sample of 109 Comcast customers, 19 said that they experienced an internet outage in the past month. a. Construct a 86% confidence interval for the proportion of all customers who experienced an internet outage in the past month. Critical value: z* = (Enter the positive one.) Margin of Error: E = Confidence Interval: ( b. Interpret your result in part (a) in a complete sentence. c. Based on the confidence interval, can you conclude that less than 25% of all customers experienced an internet outage in the past month? O Yes O No d. Based on the confidence interval, can you conclude that less than 20% of all customers experienced an internet outage in the past month? O Yes O No e. If the sample size were 100 rather than 109, would the margin of error be larger or smaller than the result in part (a)? O Larger O Smaller f. If the confidence level were 98% rather than 86%, would the margin of error be larger or smaller than the result in part (a). O Larger O SmallerIGN News wants to construct a 93% confidence interval for the proportion of households in California who own a gaming console. a. A previous survey conducted in 2012 estimated the proportion to be 0.35. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.02? b. Estimate the sample size needed if no estimate for p is available. c. If IGN News wanted to estimate the proportion in the entire United States rather than in just California, would the necessary sample size be larger, smaller, or about the same? O Larger O Smaller O The Same