I already answered these problems, but i would like for someone to explain each correct answer.

Consider the dotplot below that gives the number of times 30 college students planned to visit home in their fall 2021 semester. Which items best describe this data? Select all that apply. 10 15 20 The data has at least two unusual observations The data is centered between 6 and 7 The data has a fairly small standard deviation since there are no unusual observations The data is symmetric about the center The data is centered around 10Question 7 [2 points} Which of the following sets of numbers has the largest standard deviation? 0 1. 5, 5, 5,10 0 300, 300, 300. 300, 300 O 101, 101, 102. 103, 104 O 1, 1, 1, 30, 30 A survey on 1500 high school seniors who took the SAT and who completed an optional web survey shows that 55% of high school seniors {825 of the 1500 respondents} are fairly certain that they will participate in a study abroad program in college. Researchers want to determine whether this survey data provides convincing evidence that the majority [more than 50%} of all high school seniors who take the SAT are fairly certain they will participate in a study abroad program in college. Question 8 [2 points} J Saved Match each item to its proper description: 1, 325 2, 1500 The observational units 3, Whether or not the SAT-taking senior is fairly certain they will participate in a study abroad The variable program in college _ 4, Whether or not a high school senior The sample size . - l Question 9 (2 points) What is the value of the statistic and the proper notation in this study? Op = 0.55 On = 0.55 Op = 825 On = 825