Official Solution:

During periods when a large number of patients are admitted to a hospital, more qualified nurses are hired and more money is spent on nurse training than when the number of patients in a hospital is low. Thus, the average number of mistakes made by nurses should be lower during periods when there is a large number of patients in a hospital than when there is a small number of patients in a hospital and less money is available to hire qualified nurses and provide training to all nurses.

Which of the following, if true about a hospital during a period in which a large number of patients are admitted, casts the most serious doubt on the conclusion drawn above?

A. Its nurses demand higher wages than they do at other times.

B. Its nurses have less time to spend with each patient than they have at other times.

C. Its staff members are less likely to lose their jobs then they are at other times.

D. Its management provides opportunities for patients to provide feedback about their nurses.

E. Its training program for nurses is very rigorous.

Because more money is spent on hiring highly qualified nurses and training all nurses in a hospital when the number of patients is high, the average number of mistakes made by nurses is postulated to be lower than it is at other times. The answer will weaken the link between hiring qualified nurses and fewer mistakes made by nurses.

Choice A states that nurses demand higher salaries. The conclusion is about mistakes, not about wages.

Choice B states that nurses have less time to spend with each patient. This statement properly identifies a point that undermines the conclusion; less time per patient could feasibly result in more mistakes. Choice

B is correct.

choice C is irrelevant. Whether or not staff are likely to lose their jobs does not affect the likelihood of nurses committing errors.

Choice D,

management provides opportunities for patients to provide feedback, does not address the likelihood of nurses making mistakes. In fact, knowing that patients could provide feedback may make nurses less likely to commit errors.

choice E is incorrect. A rigorous training program is more likely to result in fewer mistakes, strengthening the argument.

Answer: B

_________________

New to the Math Forum?

Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:

GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:

PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics