Sergio has decided to diversify his investments in the following way:
$4,000 in an account earning 3.2% simple interest
$4,000 in a savings account earning 2.1% interest compounded annually
$7,500 in a certificate of deposit earning 5% interest compounded quarterly
how much total interest will sergio earn on his investments at the end of 4 years?

Use the sample data and confidence level given below to complete parts a through d. a research institute poll asked respondents if they felt vulnerable to identity theft. in the poll, n=1090 and x=549 who said yes. use a 99% confidecne level. a. find the best point of estimate of the population of portion p. b. identify the value of the margin of error e. e= round to four decimal places as needed. c. construct the confidence interval._ < p < _ round to three decimal places. d. write a statement that correctly interprets the confidence interval.