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Using the standard normal curve, the area between z = 0 and z = 3.50 is about 0.50.Group of answer choicesTrueFalse

Question

Using the standard normal curve, the area between z = 0 and z = 3.50 is about 0.50.

Group of answer choices

  • True
  • False
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Solution

Break Down the Problem

  1. Identify the total area under the standard normal curve between z=0 z = 0 and z=3.50 z = 3.50 .
  2. Understand properties of the standard normal distribution, where the mean is 0 and the standard deviation is 1.

Relevant Concepts

  1. The area under the standard normal curve represents probabilities.
  2. The total area under the curve from z= z = -\infty to z=+ z = +\infty is 1.
  3. The area from z=0 z = 0 to z=3.50 z = 3.50 is a portion of this distribution.

Analysis and Detail

  1. The area from the mean (z = 0) to any value can be obtained from standard normal distribution tables or a calculator.
  2. For z=3.50 z = 3.50 , the cumulative area from z= z = -\infty to z=3.50 z = 3.50 is approximately 0.99977.
  3. To find the area between z=0 z = 0 and z=3.50 z = 3.50 : Area(0 to 3.50)=Φ(3.50)Φ(0) \text{Area}(0 \text{ to } 3.50) = \Phi(3.50) - \Phi(0) where Φ(0)=0.5 \Phi(0) = 0.5 . So: Area(0 to 3.50)0.999770.5=0.499770.50 \text{Area}(0 \text{ to } 3.50) \approx 0.99977 - 0.5 = 0.49977 \approx 0.50

Verify and Summarize

The calculated area between z=0 z = 0 and z=3.50 z = 3.50 is approximately 0.50. This closely matches the value stated in the question.

Final Answer

True. The area between z=0 z = 0 and z=3.50 z = 3.50 is about 0.50.

This problem has been solved

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