Asked Jan 16, 2020

Basis for the Range Rule of Thumb and the Empirical Rule. In Exercise, find the indicated area under the curve of the standard normal distribution, then convert it to a percentage andfill in the blank. The results form the basis for the range rule of thumb and the empirical rule introduced in Section 3-3.

About_____% of the area is between z = − 2 and z=2 (or within 2 standard deviation of the mean).


Expert Answer

Step 1
Statistics homework question answer, step 1, image 1
Step 2

Use Table: Standard normal (z) distribution to find the areas.


For z at –2.00,

  • Locate –2.0 in the left column of the table.
  • Obtain the value in the corresponding row below 0.00
Statistics homework question answer, step 2, image 1
Step 3

For z at 2.00,

  • Locate 2.0 in the left column of the table.
  • Obtain the va...
Statistics homework question answer, step 3, image 1

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