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my area is .49 ,in a normal distribution table what value is closest to it?.4901 or .4898?

Question

My area is .49, in a normal distribution table what value is closest to it?

  • .4901
  • .4898
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Solution

1. Break Down the Problem

We need to determine which value, .4901 or .4898, is closer to the given area of .49 in a normal distribution table.

2. Relevant Concepts

In a standard normal distribution (Z-distribution), we can look up the cumulative probabilities in a Z-table to find the area to the left of a given Z-score.

3. Analysis and Detail

  1. The given area is A=0.49 A = 0.49 .
  2. We will check both values:
    • The area corresponding to 0.4901.
    • The area corresponding to 0.4898.

4. Verify and Summarize

When comparing .4901 and .4898:

  • Area 0.4901 0.4901 corresponds to a higher Z-score, representing a larger cumulative probability.
  • Area 0.4898 0.4898 corresponds to a lower Z-score, representing a smaller cumulative probability.

Given that the area we are looking to compare is .49, we find:

  • 0.49010.49=0.0001 |0.4901 - 0.49| = 0.0001
  • 0.48980.49=0.0002 |0.4898 - 0.49| = 0.0002

Thus, .4901 is closer to .49 than .4898.

Final Answer

The value closest to .49 is 0.4901.

This problem has been solved

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