A researcher is investigating quality perceptions of a product. He collects data from 500 respondents and determines the average quality rating (on a 7-point scale) is 5.9. The standard deviation is...

Extracted text: A researcher is investigating quality perceptions of a product. He collects data from 500 respondents and determines the average quality rating (on a 7-point scale) is 5.9. The standard deviation is .8. The researcher wants to operate at a 95% level of confidence. What if the researcher reconsiders his sample size and decides he wants to develop a confidence interval with a width of plus or minus .03 from the mean. What sample size would be required? O 1) 875 O 2) 2732 3) 1537 O 4) 1353