exam Maths Puzzle Numerical Ability

Solve the following application.
Statistics. A survey of 400 people found that 66 were left-handed. What percent of those surveyed were left-handed?

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exam Other Question

1.What is the critical value at the 0.05 level of significance for a goodness-of-fit test if there are six categories?
A) 3.841
B) 5.991
C) 7.815
D) 11.070
E) None of the above What is the answer to the following problem:

3x-2y-x-3x
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