Consider the Sample mean, Xn. as an estimator of population mean, l. The Cenfal Lmit Theorem tells us that if n > 40, then u - ~N(0,1) a) Juppose that o is known and n>40. Derive a 95% confidence mterval for farm th

Just B please

True or Fale, explain your answer Other things equal, we prefer SSxx to be small when constructing a confidence interval for B1

Please answer the question in the picture below to answer the question in the other picture

A poll of 1070 U.S. adults found that 563 U.S. adults, or 52.617% regularly used Facebook as a news source. Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 90% level of confidence. Express all answers as percentages rounded to 2 decimal places. Do not write the percent sign. Margin of Error (as a percentage): Confidence Interval: Margin of Error (as a percentage): Confidence Interval: Now find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 95% level of confidence. Margin of Error (as a percentage): Confidence Interval: % to O increases O stays roughly the same O decreases % to Finally, find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 99% level of confidence. and the precision of our estimate O decreases O increases O stays roughly the…

Explain what happens when finding the margin of error if all stays the sameexcept that the confidence interval increases.

What is a confidence interval

A researcher is calculating a confidence interval. All other things being constant, what happens to the width of confidence interval when the confidence level is increased? Decreases May increase or decrease Remain the same Increases