A mattress manufacturer wants to test a new line of mattresses to see if a disturbance by a sleeper on one side of a mattress will be noticeable to a sleeper on the other side. A random sample of 500 mattresses will be used for the test. A house of cards is set up on one side of each mattress, and then a bowling ball is dropped on the other side. This is done two more times, and the whole process is repeated with the sides switched. The initial side assignments are selected at random for each mattress. A mattress is considered to be resistant to disturbances if the house of cards collapses two times or fewer for the six trials on each mattress. The manufacturer will find it acceptable if more than 80% of all mattresses are resistant to disturbances. Which of the following best describes a shortcoming in the design of this study? (A) The sample size is insufficient. (B) This design will not permit the mathe- matical calculations needed for statistical inference. (C) The measurements are subject to response bias. (D) Convenience sampling is used in the design. (E) The design lacks realism.

A mattress manufacturer wants to test a new line of mattresses to see if a disturbance by a sleeper on one side of a mattress will be noticeable to a sleeper on the other side. A random sample of 500 mattresses will be used for the test. A house of cards is set up on one side of each mattress, and then a bowling ball is dropped on the other side. This is done two more times, and the whole process is repeated with the sides switched. The initial side assignments are selected at random for each mattress. A mattress is considered to be resistant to disturbances if the house of cards collapses two times or fewer for the six trials on each mattress. The manufacturer will find it acceptable if more than 80% of all mattresses are resistant to disturbances. Which of the following best describes a shortcoming in the design of this study? (A) The sample size is insufficient. (B) This design will not permit the mathe- matical calculations needed for statistical inference. (C) The measurements are subject to response bias. (D) Convenience sampling is used in the design. (E) The design lacks realism.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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