A researcher was once criticized for falsifying data. Among his data were figure
ID: 3369169 • Letter: A
Question
A researcher was once criticized for falsifying data. Among his data were figures obtained from 6 groups of rats, with 44 individual rats in each group. These values were given for the percentage of successes in each? group: 53%,? 58%, 63%, 48%, 67 % nothing. What's wrong with those? values?
A.
All percentages of success should be multiples of 6.
The given percentages cannot be correct.
B.
All percentages of success should be multiples of 25.
The given percentages cannot be correct.
C.
All percentages of success should be multiples of
8.
The given percentages cannot be correct.
D.
All percentages of success should be multiples of 4.
The given percentages cannot be correct.
Explanation / Answer
If no mouse in a given group of 44 was a "success," what would the percentage of "success" => 0%
In general, if x mice in a given group of 44 were "successes," the ratio of "successes" to trials would be:
x/44 = 100?(x/44 )%
= 25 / 11 *x %
= 25 x /11 %
B. All percentages of success should be multiples of 25.
The given percentages cannot be correct.
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