Asurvey question revealed that at a particular college 87 percent of students worked at least sometime during their undergraduate career and 13 percent did not work at all. another question showed that 32 percent of the students worked throughout their undergraduate career. a pie chart is created that includes the category "students who worked sometime during their undergraduate career, but not throughout." what would the central angle be for this category? a. 198 degrees b. 47 degrees c. 313 degrees d. 115 degrees

Answer this question, only if you know the answer. 30 points and brainliest!

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

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?