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8.2: Sampling Distribution of the Sample Proportion 1. Suppose that 65% of all Americans prefer chocolate ice cream to vanilla ice cream. Three different teams for different ice cream manufacturers conduct experiments regarding this preference (i.e., taste tests) with different sample groups. The team for Breyer's uses sample groups of 10 people. The team for Ben & Jerry's uses sample groups of 20 people, and the team for Haagen Dazs uses groups of 40 people. The three dot plots show the different distributions of the sample proportion, p, for three different teams all drawn on the sample scale. Identify which dotplot is which team. Explain how you can tell. . . . . . . . . ..... .. . :::::"... .. .. ... ................................. .. .. ............................. . . ....................... n. . . . ..................... ....................... ..................'. P. ..... .... . . . . . . . .. .... to . . . . . . ..... U.. . . . . . . . . . . . . .. . . . 0.1 0.2 0:4 0.9 1.0 0.1 0.2 0.3 0.5 0.6 0.8 Breese B = Haagen Dazs Explanation: . . ................................ .. .. .............................. . . ............................. ................... . . .. .... .. .. ... ... 0.1 0.2 0. 3 0.5 0.6 0.7 0. 8 0.9 1.0 Bend Lemy's b. What is the center for all 3 sampling distributions? () 65 c. Compute the standard error for the graph that has the largest amount of spread. (Give 5 decimal places)