Which of the following statements about electronic cover letters is true? a. sending an e-mail is a less formal type of communication, so electronic cover letters do not need to follow the business format. b. cover letters that are sent electronically should always have a brief but informative subject line which catches the reader’s eye. c. cover letters should always be sent as attachments, unless it is specifically requested that the letter be included in the body of the e-mail. d. if an employer asks that only a cover letter and résumé be submitted, it is a good idea to attach letters of recommendation also to appear professional.

In a recent telephone survey, 5,000 randomly selected teenagers were asked to cite their primary social network site. six of 10 teenagers said they use mybook as their primary social network site. a 95% confidence interval to estimate the true proportion of teenagers who use mybook as their primary social network site is found to be (0.2964, 0.9036). which of the following is a correct interpretation of the confidence level? ninety-five percent of all samples of this size would yield a confidence interval of (0.2964, 0.9036). there is a 95% chance that the true proportion of teenagers who use mybook as their primary social network site is in the interval (0.2964, 0.9036). ninety-five percent of the time, the procedure used to generate this interval will capture the true proportion of teenagers who use mybook as their primary social network site. ninety-five percent of all the samples of size 5,000 lie in the confidence interval (0.2964, 0.9036).