a trade school would like to measure the long...

a trade school would like to measure the long - term success of their graduates after they leave the school. the school emails a survey requesting information from graduates about their work experience. one question asks graduates to share their annual salary, and the results of the question will be shared in a brochure for incoming students. is it likely that the survey results will provide an accurate estimate of mean annual salary for all of the schools graduates? the survey will provide a reasonable estimate of mean annual salary because all graduates were sent the email survey. the survey will likely overestimate mean annual salary because those with higher salaries may be more likely to respond to the survey. the survey will likely underestimate mean annual salary because there may be more graduates with lower salaries than higher salaries. the survey will likely overestimate the mean annual salary because the email was only sent to graduates with jobs in their chosen field.

Answer

# Brief Explanations: In surveys like this, self - selection bias can occur. Graduates with higher salaries may be more motivated to respond to the survey, skewing the results upwards. Just sending emails to all graduates doesn't guarantee a representative sample. There's no evidence to suggest lower - salary graduates will outnumber higher - salary ones in non - response, and the email wasn't only sent to graduates in their chosen field. # Answer: The survey will likely overestimate mean annual salary because those with higher salaries may be more likely to respond to the survey.