Please I need help question 13 chapter 9 problem solve

Influence the outcome of a hypothesis test !1.3! The spotlight effect refers to overestimating the extentto which others notice your appearance or behavior ,especially when you commit a social faux pas . Effecttively , you feel as if you are suddenly standing in aspotlight with everyone looking . In one demonstrationof this phenomenon , Gilovich , Medvec , and Sav -itsky ( 2000) asked college students to put on a BarryManilow T-shirt that fellow students had previouslyjudged to be embarrassing . The participants were thenled into a room in which other students were alreadyparticipating in an experiment . After a few minutes ,the participant was led back out of the room and wasallowed to remove the shirt . Later , each participantwas asked to estimate how many people in the roomhad noticed the shirt . The individuals who were in theroom were also asked whether they noticed the shirt .In the study , the participants significantly overesti -mated the actual number of people who had noticed .2 . In a similar study using a sample of n = 9 partici -pants , the individuals who wore the shirt producedan average estimate of M = 6. 4 with SS – 162.The average number who said they noticed was3. 1 . Is the estimate from the participants signifi-cantly different from the actual number ? Test thenull hypothesis that the true mean is u = 3 . 1 usinga two – tailed test with a = . 05 .b . Is the estimate from the participants significantlyhigher than the actual number ( M = 3. 1 ) ? Use aone- tailed test with a = . 05 .