MATH 214 Study Guide - Midterm Guide: Observational Error, Pie Chart, Graphing Calculator
10 Jan 2019
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Math 214, Exam 1, Spring 2007, page 1 of 3
Math 214 Exam 1 Spring 2007 Name____________________________
Instructions: Please do all work in the space provided as much as possible. If you use additional paper,
please write "see attached" and number your problems clearly. Show all work! Correct answers without
supporting work and/or explanation may not receive full credit. Point values are in brackets [ ].
1. Determine whether each of the given statements is sensible and explain why it is or not.
a) [6] Alfred is running for class president. He asks every student in the class whether or not they are
planning to vote for him, and concludes that he is certain to win because almost everyone says they
will.
b) [6] Bessie is running for vice president in the same election, and asks all her friends who they are
going to vote for. She concludes she is certain to win because almost all of them say they will be voting
for her.
c) [6] The statistics class undertakes a poll of voters as a project. They randomly select a sample of
names from the student directory, and conclude that Charlie is likely to win because 70% of those
surveyed said they’d vote for Charlie, with a margin of error of 3%.
d) [6] The statistics class undertakes a poll of voters as a project. They randomly select a sample of
names from the student directory, and conclude that Charlie is certain to win because 70% of those
surveyed said they’d vote for Charlie, with a margin of error of 3%.
2. [8] A company has just produced a batch of 8000 memory modules. Testing of a random sample of
100 finds that 4 are defective. Draw a picture to find the best estimate of the number of defective
modules in the batch. Explain how your picture works, and state an answer to the question.
Document Summary
Instructions: please do all work in the space provided as much as possible. If you use additional paper, please write "see attached" and number your problems clearly. Correct answers without supporting work and/or explanation may not receive full credit. Name___________________________: determine whether each of the given statements is sensible and explain why it is or not. a) [6] alfred is running for class president. She concludes she is certain to win because almost all of them say they will be voting for her. c) [6] the statistics class undertakes a poll of voters as a project. Draw a picture to find the best estimate of the number of defective modules in the batch. Explain how your picture works, and state an answer to the question. Math 214, exam 1, spring 2007, page 1 of 3. All questions on this page refer to the following graph:
