Universal Studios Orlando contains the Wizarding World of Harry Potter - Diagon

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Universal Studios Orlando contains the Wizarding World of Harry Potter - Diagon Alley. Located in the heart of Diagon Alley is Ollivanders, where young wizards come in search of their most essential wizarding supply: their wand. Of interest is to determine the mean age of all people who have purchased wands from Ollivanders so far in 2015. Consider the information presented in the above paragraph. What type of characteristic is mean age of all people who have purchased wands from Ollivanders so far in 2015? (A) Categorical variable (B) Discrete quantitative variable (C) Continuous quantitative variable (D) Constant For those people who purchased a wand at Ollivanders so far in 2015, it is of interest to record the number of wands they considered before they chose the one they purchased. What type of characteristic is the number of wands considered before they chose the one they purchased? (A) Categorical variable (B) Discrete quantitative variable (C) Continuous quantitative variable (D) Constant Consider the information presented in the paragraph above question 8. Suppose Ollivanders keeps information on every wand they sell and they report that among all people who have purchased wands from Ollivanders so far in 2015, 32% are from other countries. In this scenario, is 32% an example of a parameter or a statistic? (A) Parameter (B) Statistic Suppose a sample of 200 people who have purchased wands from Ollivanders so far in 2015 is selected: each was asked his or her age and how long they were visiting Universal Orlando, among other questions. The sample was purposely selected such that everyone in the sample was from the United States: people from other countries were not included in the sample. In this scenario, what type of bias could this cause? (A) Selection bias (B) Response bias (C) Nonresponse bias (D) Confounding bias Islands of Adventure contains the Wizarding World of Harry Potter - Hogsmeade, which features Harry Potter and the Forbidden Journey. In this attraction, you make your way through familiar classrooms and corridors of Hogwarts School of Witchcraft and Wizardry, then you soar above the castle grounds as you join Harry Potter and his friends on an unforgettably thrilling adventure, coming face-to-face with magical creatures. Of interest is to determine the average wait time for all guests on the Harry Potter and the Forbidden Journey attraction during June 2015. Guests staying at one of the onsite Loews hotels receive one hour early admission to Universal Studios Orlando and Islands of Adventure. Hence, those guests could potentially have shorter wait times for Harry Potter and the Forbidden Journey, and a study was initiated to compare the wait times for those guests staying in onsite Loews hotels to people at the parks who are not staying in those hotels. A random sample of 400 people choosing to experience Harry Potter and the Forbidden Journey are selected, of which 150 are guests of an onsite Loews hotel and 250 are not. For each, the time they waited for the attraction was recorded, and the average wait time for the 150 guests staying at the onsite Loews hotels was compared to the average wait time for the 250 people who are not staying in one of those hotels. As described, is this an example of a controlled experiment or an observational study? (A) Controlled experiment (B) Observational study Consider the information provided in question 12 and the paragraph above question 12. In this scenario, which of the following is the treatment/explanatory variable? (A) Whether the person was male or female. (B) The time the person waited to get on the attraction. (C) Whether the person was from another country or not. (D) Whether the person stayed in an onsite Loews Hotel or not. Consider the information provided in question 12 and the paragraph above question 12. In this scenario, which of the following is the response of interest? (A) Whether the person was male or female. (B) The time the person waited to get on the attraction. (C) Whether the person was from another country or not. (D) Whether the person stayed in an onsite Loews Hotel or not. Guests with a two-park admission ticket can ride the Hogwarts Express to travel from one park to the other. From the train windows, guests see some of the magnificent scenery of London and the British countryside, and encounter characters featured in the films as they travel between London and Hogsmeade. Suppose that on one train there are 354 guests, and the goal is to select a simple random sample of 8 such guests to provide feedback on the experience. Explain in detail what you would do to select a simple random sample of 8 of these guests, and give the numbers of the 8 guests that you would have chosen. The list of numbers below is a row of random digits from a random number table and please start at the far left of that row. Use the procedure illustrated in class. 20194411459035822957232850920854829109485767859105938502948503958239447728298347103494735599

Explanation / Answer

We are allowed to do 1 question at a time. Post again for second question.

8) Age and Income are continuous numerical variables. (Although the recorded ageshave been truncated to whole numbers, the concept of age is continuous.) Number of children is a discrete numerical variable (a count).

So, option C

9) Option B.

Discrete

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