What is the equation in slope intercept form of the line whose graph passes through the origin and has a slope of 1/2

1. what is the measure of ∠abc? what is the measure of ∠abd?

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?

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great