MATH 225N (Math225N)

1. Question: A statistics professor recently graded final exams for students in her introductory statistics course. In a review of her grading, she found the mean score out of 100 points was a x¯=77, with a margin of error of 10……Construct a confidence interval for the mean score (out of 100 points) on the final exam. 2. Question: A random sample of adults were asked whether they prefer reading an e-book over a printed book. The survey resulted in a sample proportion of p′=0.14, with a sa...

1. Question: Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are listed below……. 16,14,14,21,15 2. Question: Given the following list of prices (in thousands of dollars) of randomly selected trucks at a car dealership, find the median…… 20,46,19,14,42,26,33 3. Question: Each person in a group shuffles a deck of cards and keeps selecting a card until a queen appears. Find the mode of the following num...