Each of three friends flips a coin 73 times. The results for each friend are shown in the tables. Find
the relative frequency for the event "heads" for each friend. If the friends combine their results to get
131 heads and 88 tails, what is the relative frequency for the event "heads"? Use pencil and paper,
Suppose each friend flips a coin 730 times. Is there a value you would expect the relative frequency
for the event "heads" to be close to?

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

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?