Test: Data Insights - 4 - GMAT MCQ

Let number of second shift workers be n
Then number of first shift workers = 2n/3
Let b the number of bulbs made by each worker in the first shift
Then number of bulbs made by each worker in the second shift is 4b/3
Total bulbs made by first shift workers: 2nb/3
Tota bulbs made by second shift workers: 4nb/3
Total bulbs by both: 6nb/3 => 2nb
Now try substituting value of 2nb (first column) to find nb and get 2nb/3 (second column)
If 2nb =3, nb. = 3/2 not possible => eliminate
If 2nb = 6, nb = 3 => 2/3 nb = 2 which is not present => eliminate
If 2nb = 12, nb = 6 => 2/3 nb = 4, again not present => eliminate
If 2nb = 24, nb = 12 => 2/3nb = 8, again not present => eliminate
Therefore only 36 should fit in. Let's check
2nb = 36 => nb = 18 => 2/3nb = 12
Hence Total Bulbs for Both Shifts (Column 1) = 36
Total First-Shift Bulbs (Column 2) = 12

1. misleading data - can't say
2. Ramesh has non-misleading data - and avg ~ 2mins -- yes
3. misleading data - can't say

(1) The species with a greater need to manage the population is the one with low management needs but High capability (population) need. California sea lion fits the category.
(2) The species with a greater need to manage the population, as well as greater management need, is the one with High management needs and capability (population management) need. Ice seal fits the category.
Hawaiian monk seals don't fit the category because it's not on the same population management need level as of California sea lion.

Statement 1: Fifteen of the 16 pieces sold. The eighth highest sale price is the median of the set of sale prices. This price is $1800.
Answer: No
Statement 2: The probability that a piece by Masterson sold for more than $2000 is 33%, but that’s not what the question is asking. Five pieces in total sold for more than $2000, and two of them were by Masterson, so the probability is 2 out of 5, or 40%.
Answer: No
Statement 3: This will take some doing, since there’s no neat way to sort the table in order to get all the canvas and paper works grouped neatly together. It is also not easy to eyeball the table and judge whether paper or canvas works had a higher average sale price so you should calculate the actual averages. Sorting by material helps a little. Six pieces were on canvas. Their average sale price was:

Answer: Yes

(1) When X and Y are together: X turns out to be greater than Y, hence we get to see X#Z on the RHS so X>Y but no information on relation of X and Z - INSUFFICIENT
(2) When X and Z are together: Z turns out to be greater than X, hence we get to see Z#Y on the RHS so Z>X but no information on relation of Z and Y - INSUFFICIENT
Considering both - So X>Y and Z>X hence the relation is Z>X>Y

Total = P(A) + P(B) + P(C) - P(A and B) - P(B and C) - P(A and C) - 2*P(A and B and C)
400 = 200 + 200 + 200 - P(A and B) - P(B and C) - P(A and C) - 2 * 96
P(A and B) + P(B and C) + P(A and C) = 8
This is the minimum value required to satisfy the given numbers.
To maximize, all singular selections set should be 0,
P(A) = P(singular A) + P(A and B) + P(A and C) + P(A and B and C)
200 = 0 + P(A and B) + P(A and C) + 96
P(A and B) + P(A and C) = 104 --- (1)
similarly,
P(B and C) + P(A and C) = 104 --- (2)
P(A and B) + P(B and C) = 104 --- (3)
From (1), (2) and (3), summing up,
2(P(A and B) + P(A and C) + P(B and C)) = 312
P(A and B) + P(A and C) + P(B and C) = 156
Hence, least value is 8 and greatest value is 156.

This question needs classification of stocks, so we first read the relevant data from the charts and classify the stocks.
For Stock Valuation Classification (SV Classification), we read the data from chart 1. The data is given below. We find that stock D cannot be classified per any category of SV Classification.
From Chart 1

For Profit Generation Capability (PGC) classification, we read the data from chart 2.
The percentage of profit is given as (profit/revenue)*100%.
Let’s take stock A first.
R/E ratio for A is 1.3 or 1.3/1. It means that for a revenue of $1.3, expense is $1, and profit is R-E=1.3-1=0.3. So % profit would be (P/R)*100 = (0.3/1.3)*100% =23.08%.
Similarly, for other companies, profit percentages are calculated given below.
From Chart 2

1. a.There is no stock that is not classified for both the categories. In the SV classification, stock D is not classified, whereas in the PGC classification, stock C is not classified. But both these stocks are classified per at least one of the categories, so the answer is NO.
1. b. B stock is Volatile Bear-Struggler. Let’s look at the criterion of Volatile Bull.
Volatile Bull - A stock whose TOP is more than 30% and BOTTOM is less than 10%.
Presently, TOP of stock B is 9% and BOTTOM is -12%. B only qualifies for the BOTTOM criterion of Volatile Bull.
To turn it to Volatile Bull, we need to increase its TOP by more than 30% -9% = 21 percentage points. It is more than 20 percent point increment. So the answer is no. No.
1. c.From the table, we know that A stock is the Rain Maker stock. The revenue of the company of stock A is approximately $230, and R/E ratio is 1.3. This gives expenses as 230/1.3 = $176.92. The value is not approximately $230, hence the answer is No.

We should be wary of the fact that the question asks for combined revenue to combined expense ratio. We must not simply add their R/E ratios. From chart 2, we get their respective R/E values.

We need not calculate combined revenue and combined expense for each of the options. Logically, R/E ratios for C and D lie in bottom two, hence their combined revenue, and combined expense will also be least. So the answer is CD. The table below shows that combined revenue to combined expense ratio for CD will be the lowest. It lies between 1~0.9.

(1) The number of households in the Midwest that do not use electricity for heating = (100-18)% of 25.9 million i.e. 21.238 million.
The number of households in the US that use electricity for heating = 35% of 113.6 million i.e. 39.76 million
Thus,
21.238 million/ 39.76 million = 0.534
That's closer to 1/2
(2) The number of households in the Midwest that use either propane/LPG or natural gas for heating : (69 + 8)% of 25.9 million i.e. 19.943 million.
Thus, the average number of households using either propane/LPG or natural gas for heating per state = 19.943/(total number of states = 12) = 1.66 million
That's closer to 1.7 million.

1. We see that the percentage of Surgeons and even Paramedics wearing protective gear is higher than the veterinarian across all types of gears. This can be explained by "Humans catch diseases from other humans much more easily than from animals." Hence, the first statement "Would Help Explain" the information in the table.
2. We see that a higher percent of Construction Workers wear earplugs or hearing protection compared to Paramedics. This could be explained by "Ambulance sirens are loud, but they don't damage people's hearing as much as power tools do." Hence, the second statement "Would Help Explain" the information in the table.
3. There is no information in the table that can be explained by "About 10% of janitors earn extra pay for cleaning hazardous areas." Hence, the third statement "Would Not Help Explain" the information in the table.

Option C correct: ­The question deals with conditionals. Given data about account balances:

Option C is correct.
unless a customer explicitly grants permission, no nonpublic information about the customer—e.g., account balances or credit history—can be shared with any non-affiliated institution.
Customers explicit granting of permission is necessary for sharing nonpublic information with any non-affiliated institution.
All info can be shared with any affiliated institutions except passwords.
Select for With an affiliated institution the circumstances under which the government of Nation X allows a bank to share a customer's account balance with an affiliated institution and for With a non-affiliated institution the circumstances under which the government of Nation X allows a bank to share a customer's account balance with a non-affiliated institution.
With an affiliated institution - All circumstances (ANSWER)
The answer here will not be "Upon informing the customer that it will" because the data does not say that the bank must inform the customer that it is going to share the account balance and then share it.
The data only says "The government of Nation X also requires that banks inform customers of all of these policies."
So the bank must inform the customer upon joining that we will share your non public information (except passwords) with affiliated institutions if and whenever asked for. All such policies will be shared with the customer. But the bank does not need to inform the customers before actually sharing this data.
With a non-affiliated institution - Only if a customer has explicitly granted permission (ANSWER)
Customers explicit granting of permission is necessary for sharing nonpublic information with any non-affiliated institution.

1. In making their decision, the project manager and the financial officer considered how much time the contractors would spend on construction.
   Answer: No
   Based on the emails, the time contractors would spend on construction is not explicitly mentioned as a key factor in their decision. Therefore, this statement cannot be accurately inferred.
2. The project manager and the financial officer disagree about the best choice of contractors for completing the project.
   Answer: Yes
   The emails indicate that there is a disagreement between the project manager and the financial officer about which contractor is the best choice for the project.
3. The project manager is willing to wait a few days before deciding on Campolina’s bid.
   Answer: No
   The emails do not mention the project manager being willing to wait a few days before deciding on Campolina’s bid. Therefore, this statement is not supported by the information.

Hence, the correct options are:
In making their decision, the project manager and the financial officer considered how much time the contractors would spend on construction: No
The project manager and the financial officer disagree about the best choice of contractors for completing the project: Yes
The project manager is willing to wait a few days before deciding on Campolina’s bid: No

Campolina Construction presented a $1.1 million plan, which is 0.25 less than Appaloosa's bid.
But, due to delay of almost 22 days, the cost of C's cost becomes onle 0.05 less. Thus 22 days delay cost around 0.20 million
or 200,000/22 or 10,000 nearly

1. Approximately 15 percent of 8th graders in 2017 participated in exactly one of the six after-school activities:
    
   • From the graph, the percentage of 8th graders participating in one activity is approximately 15%. This corresponds to Blank 1.
      
2. In 2017, there were two grade levels in which more students participated in sport activities than non-sport activities:
    
   • The two grade levels where more students participated in sports activities (soccer, tennis, or track) than non-sport activities (math team, band, or debate team) are the 7th grade and 12th grade. Hence, Blank 2 is "were two grade levels".

The correct answer is Option C:
Blank 1: 15
Blank 2: were two grade levels

I. Assuming that the airline has the option to suspend up to three routes in order to mitigate the financial losses, it would be preferable to suspend the routes with the least passenger revenue. Based on the pie chart, the routes contributing the least to passenger revenue are:

• Regional (2%)
• Far East (5%)
• EU (7%)

These three regions contribute the least to the airline’s passenger revenue, so Blank 1 is: EU, Far East, and Regional.

II. The ratio of the revenue of the most costly route (KSA) to the least costly route (Regional) is calculated as:

• Most costly route: KSA with 28% of revenue.
• Least costly route: Regional with 2% of revenue.

The ratio of the revenue of the most costly route to the least costly route is:
28% / 2% = 14:1
Therefore, Blank 2 is: 1:14.

Thus, the correct solution is:
Option A:

• Blank 1: EU, Far East, and Regional
• Blank 2: 1:14

To determine the correct answer, let's analyze the frequencies of the words in the different sections for each of the pairs mentioned in the options. We will check if the frequencies of the words show a positive correlation, meaning as one increases, the other also increases in the same sections.

Pair 1: Word 1 and Word 3

Let's look at the frequencies for Word 1 and Word 3 across all sections:


As we can see, as the frequency of Word 1 increases (from Section A to Section C), the frequency of Word 3 also increases in a similar pattern, indicating a positive correlation. Therefore, Word 1 and Word 3 are positively correlated.

Conclusion: Yes (positive correlation)

Pair 2: Word 2 and Word 5

Let’s examine the frequencies for Word 2 and Word 5 across all sections:

As we observe, the frequencies for Word 2 and Word 5 do not follow a clear upward or downward trend together. For example, in Section A, Word 2 has a frequency of 2 and Word 5 has a frequency of 7, but in Section G, Word 2 has a frequency of 12 and Word 5 has a frequency of 1. This shows no consistent positive correlation.

Conclusion: No (no positive correlation)

Pair 3: Word 5 and Word 6

Now, let’s look at the frequencies for Word 5 and Word 6 across all sections:

Here, we can see that as the frequency of Word 5 decreases (from Section A to Section G), the frequency of Word 6 also generally decreases in a similar pattern. This indicates a positive correlation between the two words.
Conclusion: Yes (positive correlation)
Final Answer

• Word 1 and Word 3: Yes (positive correlation)
• Word 2 and Word 5: No (no positive correlation)
• Word 5 and Word 6: Yes (positive correlation)

Thus, the correct option is Option B:

statement 1: insufficient
We don't know anything about the reduction

statement 2: insufficient
We don't know anything about the original price. If original was $100, then reduced price would be $50 and the %reduced would be 50%. If original was $200, then reduced price would be $150 and %reduced would be 25%.

statement 1+2: sufficient
We know the original price from statement 1 and with statement 2 we know that the reduced price is $330. We can then figure out the %reduced.

Poisoning by mushrooms

• A person in a rural area of Europe collecting mushrooms from the wilderness and using them to prepare a salad for his family.

Foraging wild mushrooms poses a high risk of poisoning due to potential misidentification, a common cause of mushroom poisoning in temperate regions.

Poisoning by plants

• A person in an equatorial forest consuming tree bark he personally identified as possibly having hallucinogenic properties during a self-guided tour.

There is a high risk of poisoning because self-identifying and consuming tree bark, especially in an equatorial forest with potentially unfamiliar plant species, is inherently dangerous.

Analysis of other options

• A person in Eastern Asia eating soup that contains rare and exotic vegetables prepared by an experienced chef.

There is a low risk of poisoning because an experienced chef is unlikely to use toxic ingredients, even in a soup containing rare or exotic vegetables.

• A person in Sicily, who is allergic to mushrooms, requesting mushrooms to be removed from a pizza before eating.

There is no risk of poisoning because mushrooms are avoided entirely, making this irrelevant for both mushroom and plant poisoning.

• A person in North America observing the ritual burning of fungi, including a type of mushroom known to be highly toxic.

There is a low risk of poisoning because observing from a distance minimizes exposure to any potentially harmful fumes, making this largely irrelevant for both mushroom and plant poisoning.

Correct answer:

Poisoning by mushrooms "A person in a rural area of Europe collecting mushrooms from the wilderness and using them to prepare a salad for his family."

Poisoning by Plants "A person in an equatorial forest consuming tree bark he personally identified as possibly having hallucinogenic properties during a self-guided tour."

A rectangle has a Length : Width ratio of 3 : 1. From the table below, select a combination of Perimeter and Area that satisfies such a relationship.
Perimeter of a Rectangle = 2(l+b)
We are given Lenght/Breadth = 3/1; Length(l) = 3* Breadth (b)
Perimeter = 2(4 b) = 8 b
Area = l*b = 3 b²
From the options, Perimeter = 8 (4) = 32; Area = 3 * 16 = 48

1. There are approximately 11 times as many people age 100 or older in Asia and Europe combined than in South America.
People aged 100 or older in Asia and Europe is 40% + 27.5% ≈ 66
66% = 6.2%x (Where x signifies the total no. of people)  ≈11
2. If there are 18,600 people aged 100 or older living in South America, then there are approximately 73300 people aged 100 or older living in North America.