1: Researchers need to calculate the standard error for their estimates of population parameters using sampling distributions and to compute confidence intervals. Right now, many researchers and government officials would like to know If household income has gone up or gone down (and by what amount) during the COVID year. The standard deviation of a previous population study was $6,000.00, and is to be used to calculate the standard error. Please round your responses to two decimal places 1.. If a random sample of 50 households is drawn and the head of the household is interviewed, what is the standard error for this study with n = 50? 2. . If the sample size were increased to 150, what would the standard error be 3. . If the sample size were increased to 1200, what would the standard error be . Question 2: If you completed Question 1 use the standard errors you calculated to compute the 95% Confidence Interval for the decline in household income for each study. 1 Study 1 with an n = 50 reported an average decrease in household income for the COVID year of $19,000.00 2. Study 2 with an n = 150 reported an average decrease in household income of $23,000.00. 3. Study 3 with an n = 1200 reported an average decrease in household income of $29,000.00