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fefebat
06.05.2021 •
Mathematics
The graph of y=x2 +4x+3 is shown what are the coordinates of the turning point
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Ответ:
The expected value of the inseam length of the jeans is found as
30% of 30+ 25% of 32+ 10% of 34+ 10% of 36 + 10% of 38 + 15% of 40
=![\frac{30}{100}\times30 +\frac{25}{100}\times32+ \frac{10}{100}\times34+ \frac{10}{100}\times36 +\frac{10}{100}\times38+ \frac{15}{100}\times40](/tpl/images/0050/7137/aac00.png)
=![9+8+3.4+3.6+3.8+6=33.8](/tpl/images/0050/7137/23bf1.png)
Hence, the third option 33.8 is the correct expected value.