GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 20 Feb 2019, 07:36

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

## Events & Promotions

###### Events & Promotions in February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
• ### Free GMAT Prep Hour

February 20, 2019

February 20, 2019

08:00 PM EST

09:00 PM EST

Strategies and techniques for approaching featured GMAT topics. Wednesday, February 20th at 8 PM EST

February 21, 2019

February 21, 2019

10:00 PM PST

11:00 PM PST

Kick off your 2019 GMAT prep with a free 7-day boot camp that includes free online lessons, webinars, and a full GMAT course access. Limited for the first 99 registrants! Feb. 21st until the 27th.

# Hospital H conducted a survey of two groups of patients who were enrol

Author Message
TAGS:

### Hide Tags

Intern
Joined: 07 Oct 2015
Posts: 14
Hospital H conducted a survey of two groups of patients who were enrol  [#permalink]

### Show Tags

19 Jun 2016, 14:15
1
2
00:00

Difficulty:

5% (low)

Question Stats:

84% (01:27) correct 16% (01:38) wrong based on 187 sessions

### HideShow timer Statistics

Hospital H conducted a survey of two groups of patients who were enrolled in an exercise rehabilitation program last month. Was the range of the numbers of days that the patients in the first group exercised last month equal to the range of the numbers of days that the patients in the second group exercised last month?

(1) For each group, the number of patients enrolled was 21 and the least number of days that a patient exercised last month was 5.

(2) For each group, the average (arithmetic mean) number of days that the patients exercised last month was 13.
SC Moderator
Joined: 13 Apr 2015
Posts: 1687
Location: India
Concentration: Strategy, General Management
GMAT 1: 200 Q1 V1
GPA: 4
WE: Analyst (Retail)
Hospital H conducted a survey of two groups of patients who were enrol  [#permalink]

### Show Tags

20 Jun 2016, 01:22
1
Question: Is Range1 = Range2?

St1: Number of patients = 21 and Number of days $$\geq {5}$$
If the patients in both groups exercised for 5 days then Range = 0
If the patients exercised for different number of days then range in both the groups may be different from each other

St2: Average number of days = 13 --> Clearly insufficient. Average of 13 can be obtained in different ways. So range of both the groups may be same or different

Combining St1 and St2: Number of days $$\geq {5}$$ and Average number of days = 13 --> Still insufficient as we cannot obtain a distinct answer.

Verbal Forum Moderator
Status: Greatness begins beyond your comfort zone
Joined: 08 Dec 2013
Posts: 2232
Location: India
Concentration: General Management, Strategy
Schools: Kelley '20, ISB '19
GPA: 3.2
WE: Information Technology (Consulting)
Re: Hospital H conducted a survey of two groups of patients who were enrol  [#permalink]

### Show Tags

20 Jun 2016, 07:25
2
Let range of first group = R1
and range of second group = R2
is R1= R2 ?
(1) For each group, the number of patients enrolled was 21 and the least number of days that a patient exercised last month was 5.
Total number of patients in group 1 and 2 is 21 each and least number = 5
Not sufficient as we can't determine the maximum number for each group
(2) For each group, the average (arithmetic mean) number of days that the patients exercised last month was 13.
Average of group 1 = Average of group 2 = 13
We have no information about the min and max value .
Not sufficient
Combining 1 and 2 , we get
Still not sufficient as we have no information about max value of the group 1 and 2 .
_________________

When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford
The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long
+1 Kudos if you find this post helpful

Non-Human User
Joined: 09 Sep 2013
Posts: 9861
Re: Hospital H conducted a survey of two groups of patients who were enrol  [#permalink]

### Show Tags

10 Oct 2018, 19:40
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: Hospital H conducted a survey of two groups of patients who were enrol   [#permalink] 10 Oct 2018, 19:40
Display posts from previous: Sort by