Roberto2014
16.09.2019 •
Mathematics
The number must begin and end with an odd digit
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Ответ:
Ответ:
Ответ:
We find the z-score associated with each of these values using the formula
z = (X-μ)/σ
z = (125-134)/4.8 = -9/4.8 = -1.875 ≈ -1.88
Using a z-table (http://www.z-table.com), we see that the area under the curve to the left of, less than, this is 0.0301.
z = (135-134)/4.8 = 1/4.8 = 0.2083 ≈ 0.21
Using a z-table (http://www.z-table.com), we see that the area under the curve to the left of, less than, this is 0.5832.
We want the area between them, so we subtract:
0.5832-0.0301 = 0.5531