Explanation Given info: A pizza delivery boy wants to increase the tips and for this, he made an experiment on the next 40 deliveries. When the delivery boy was 5 minutes away from the customer, he flips a coin to know whether to call the customer with the personal mobile phone or not, with the hope that the phone call may give a slight bump tips as it gives bump to the customer service. After 40 deliveries, the delivery boy compares the percentage of tips from the customers between those he called and those he did not call. Justification: Blinding : The blinding in an experiment means the non-disclosure of the treatment that a particular experimental unit is receiving. Blinding is of 2 types: ‘Single-blinding’, where the experimental unit does not know which treatment is being given. ‘Double-blinding’, where neither the experimental unit, nor the researcher knows which treatment the experimental unit is being given...

Intro Stats, Books a la Carte Edition (5th Edition)

5th Edition

ISBN: 9780134210285

Author: Richard D. De Veaux, Paul Velleman, David E. Bock

Publisher: PEARSON

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Chapter 11, Problem 9E

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Explain whether the experiment conducted by a delivery boy is single-blind or double-blind.

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Chapter 11, Problem 8E

Chapter 11, Problem 10E

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Chapter 11 Solutions

Intro Stats, Books a la Carte Edition (5th Edition)

Ch. 11.3 - At one time, a method called gastric freezing was...Ch. 11.4 - Recall the experiment about gastric freezing, an...Ch. 11 - Steroids The 1990s and early 2000s could be...Ch. 11 - Prob. 2E Ch. 11 - Prob. 3E Ch. 11 - Tomatoes You want to compare the tastiness and...Ch. 11 - Tips II For the experiment described in Exercise...Ch. 11 - Prob. 6E Ch. 11 - Prob. 7E Ch. 11 - Prob. 8E

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Explain whether the experiment conducted by a delivery boy is single-blind or double-blind.

Solution Summary: The author explains that the experiment conducted by a delivery boy is single-blind, and the researcher knows the treatments given to the experimental units.

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Explain whether the experiment conducted by a delivery boy is single-blind or double-blind.

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