About 13% of people in the United States are left-handed. One university planned a large 250-seat auditorium lecture hall with 15% "left-handed" seats. A class that filled the auditorium ran out of these seats because there were 18% left-handers in the class. Assume that the students in the class represent a random sample of people in the United States (at least with respect to left-handed-ness). True or False: The mean of the sampling distribution for the proportion of left-handers in the class is 13%.

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below. correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance. what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?

Which expression gives you the distance between the points (5,1)and(9,-6)

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}