A bottle contains 16 ounces of water. The variable x represents the volume, in ounces, of water remaining in the bottle after the first drink is taken. What are the natural bounds for the values of x? Is x discrete or continuous? Explain.
What will be an ideal response?
Q. 2A coin is flipped 6 times. The variable x represents the number of tails obtained.
List the possible values of x. Is x discrete or continuous? Explain.
What will be an ideal response?
Q. 3A number between 1 and 10, inclusive, is randomly chosen. Events A and B are defined as follows.
A: The number is even
B: The number is less than 7
Which expression represents the event that the number is both even and less than 7?
A) A B B) Bc C) Ac D) A B
Q. 4What is meant by a representative sample?
What will be an ideal response?
Q. 5Management at a home improvement store randomly selected 135 customers and observed their shopping habits. They recorded the number of items each of the customers purchased as well as the total time the customers spent in the store.
Identify the types of variables recorded by the managers of the home improvement store.
A) number of items - continuous; total time - discrete
B) number of items - continuous; total time - continuous
C) number of items - discrete; total time - discrete
D) number of items - discrete; total time - continuous
Q. 6Does online teaching help or hinder student learning? To help answer this question, a statistics teacher decided to teach his three sections of a particular class using three different teaching models - a traditional face-to-face section,
a completely online section, and a hybrid or blended section that incorporated both a face-to-face and online component in the section. Students were randomly assigned to the different sections, taught identical information using the different teaching formats, and given identical examinations to measure student learning. The goal was to identify if the teaching method used affected student learning performance. Identify the data collection method used in this study.
A) data from a published source
B) data collected observationally
C) data from a designed experiment
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