How far do US workers travel to get to their jobs? A researcher would like to collect information on the commute distance traveled by workers and considers many methods for collecting data. Which of the following methods
represents a voluntary response sample?
o Workers are invited to share their daily commute distance on a website
Workers at a large company are each asked to share their daily commute distance.
The researcher stands in a public area and asks each adult to share their daily commute distance.
The researcher takes a random sample of adults from a large town and asks each to share their daily commute
distance

Walgreens sells both kleenex and nyquil. in a random sample of 5000 purchases, it was found that 1200 contained kleenex and 540 contained nyquil. these are not independent because sick people are more likely to buy both and healthy people more likely to buy neither. in looking into that, it was found that 360 purchases contained both. a. make a two-way table to display this information. fill in the table with the missing entries, and be sure your table has row and column totals. b. if we randomly select a purchase that contained kleenex, what is the probability it also contained nyquil? c. what percent of all purchases didn’t contain either product?