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any explanation for question 2?
­Question 2 build upon the hypothesis that the value of the TOTAL donations (not only monetary donations) is dependent on the visibility. Now, total donations are not only those monetary donations but also services. So this hypothesis makes the assumption that the service value is not high to invalidate this hypothesis. A weakener that we are looking for will go in that direction but doesn't have to prove the hypothesis to be incorrect, only challenge the belief in the hypothesis. C does just that.
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KarishmaB

Can you please explain question 1 and 2
­Question 1 just requires of you that you read the graph correctly. We are asked if each percentage is greater than all provided mean charitable donation percentage of each visibility group in every year represented in the graph. The graph shows 0.43% as max of mean charitable donation percentage of both groups, so we can answer 25% and 2.5% both with a 'Yes', as both are more than 0.43%. 0.25% is not larger than 0.43%, hence a 'No'.­
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­
Official Mock No. 4

Attachment:
2024-08-29_15-16-27.png
<br />











­
­Question 1.

For each of the following percentages, select Yes if the percentage is greater than the mean charitable donation percentage of each visibility group in every year represented in the graph. Otherwise, select No.

The graph shows us that the maximum mean contribution by any group in any year was .43% of pre tax profit (high visibility group in 1991). For all other years and both groups, the mean percentage was lower than .43%

So 25% and 2.5% are certainly high percentages than the mean charitable donation percentage of each visibility group in every year represented in the graph

Select Yes for 25% and 2.5%

But .25% is not higher than all the mean mean charitable donation percentage of each visibility group in every year represented in the graph. It is lower than some e.g. it is lower than .3% of 1990 high visibility group, .43% of 1991 high visibility group etc.

Select No for .25%
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­
Official Mock No. 4

Attachment:
2024-08-29_15-16-27.png
<br />











­
­Question 2.

Before the study, the researchers hypothesized that the value of total charitable donations as a percentage of total pretax profits would be positively correlated with the public visibility of the company that gave the donation. Assuming that the information provided in the tabs is correct, which one of the following claims, if true, would most undermine this hypothesis?

We see from the graph that the higher visibility group does give more percentage donation. Their graph is always higher than the graph of low visibility group.

But we need to undermine that "the value of total charitable donations as a percentage of total pretax profits would be positively correlated with the public visibility of the company"

Note that the conclusion that we want to undermine is regarding total charitable donations. The graph only tells us about the monetary donations (Given in TAB 1: The charitable donation percentage is the value of total monetary donations as a percentage of total pretax profits) It does not include non monetary donations.

To undermine that high visibility groups do give more we should say that low visibility groups give more non-monetary donations. Hence overall both groups could be giving equivalent total donations.

That is why only (C) works.
(C) Companies in the low-visibility group gave a significantly greater value of total nonmonetary donations as a percentage of their total pretax profits than did companies in the high-visibility group.

Answer (C)­
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­
Official Mock No. 4

Attachment:
2024-08-29_15-16-27.png
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­
­
Question 3.

Given:
Condition 1: the researchers limited their study to companies that were continuously on the FTSE 100 Index (a popular stock index) from 1990 to September 2003.
Condition 2: The high-visibility group was composed of only the 7 companies that more than 85% of the respondents had heard of. The low-visibility group was composed of only the 7 companies that less than 25% of the respondents had heard of.

I. A company that exactly 92% of the respondents have heard of but that was not in the 1996 FTSE 100 Index - Condition 1 not satisfied. So it was not included.

II. A company that exactly 13% of the respondents have heard of and that was in the FTSE 100 Index from 1990 to September 2003 - Low visibility group

III. A company that exactly 78% of the respondents have heard of and that was in the FTSE 100 Index from 1990 to September 2003 - To be a part of high visibility group, the company should have been heard of by 85% people. Hence it was not included.

Select Low visibility/Not included for all three.
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dont we have to find out mean of the groups than compare?
KarishmaB
SergejK
­
Official Mock No. 4

Attachment:
2024-08-29_15-16-27.png
<br />











­
­Question 1.

For each of the following percentages, select Yes if the percentage is greater than the mean charitable donation percentage of each visibility group in every year represented in the graph. Otherwise, select No.

The graph shows us that the maximum mean contribution by any group in any year was .43% of pre tax profit (high visibility group in 1991). For all other years and both groups, the mean percentage was lower than .43%

So 25% and 2.5% are certainly high percentages than the mean charitable donation percentage of each visibility group in every year represented in the graph

Select Yes for 25% and 2.5%

But .25% is not higher than all the mean mean charitable donation percentage of each visibility group in every year represented in the graph. It is lower than some e.g. it is lower than .3% of 1990 high visibility group, .43% of 1991 high visibility group etc.

Select No for .25%
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dont we have to find out mean of the groups than compare?
KarishmaB
SergejK
­
Official Mock No. 4

Attachment:
2024-08-29_15-16-27.png
<br />











­
­Question 1.

For each of the following percentages, select Yes if the percentage is greater than the mean charitable donation percentage of each visibility group in every year represented in the graph. Otherwise, select No.

The graph shows us that the maximum mean contribution by any group in any year was .43% of pre tax profit (high visibility group in 1991). For all other years and both groups, the mean percentage was lower than .43%

So 25% and 2.5% are certainly high percentages than the mean charitable donation percentage of each visibility group in every year represented in the graph

Select Yes for 25% and 2.5%

But .25% is not higher than all the mean mean charitable donation percentage of each visibility group in every year represented in the graph. It is lower than some e.g. it is lower than .3% of 1990 high visibility group, .43% of 1991 high visibility group etc.

Select No for .25%


No. Look at the question stem:

For each of the following percentages, select Yes if the percentage is greater than the mean charitable donation percentage of each visibility group in every year represented in the graph. Otherwise, select No.

So, select YES if 25% is greater than the mean charitable donation percentage of both groups in every year. We don't have to calculate anything. The "mean charitable donation percentage" is represented in the graph of each group in every year.
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