1 Answer

Oscar Boykin · Answer 1 · 2021-11-21T10:45:20+0000

Answer:

1)
$\bar x = 6.2$ , 2)
$\bar x = 8.75$ , 3)
$\bar x = 4.5$ , 4)
$p = 40\,\%$ , 5)
$p = 60\,\%$ , 6)
$p = 10\,\%$

Explanation:

1) Mean length of all fish in the sample:

$\bar x = (12+5+3+5+8+2+10+9+4+4)/(10)$

$\bar x = 6.2$

2) Mean length of adult fish in the sample:

$\bar x = (12+5+8+10)/(4)$

$\bar x = 8.75$

3) Mean length of juvenile fish in the sample:

$\bar x = (5+3+2+9+4+4)/(6)$

$\bar x = 4.5$

4) Percentage of sample that were adult fish:

$p = (4)/(10)* 100\,\%$

$p = 40\,\%$

5) Percentage of sample that were juvenile fish:

$p = 100\,\% - 40\,\%$

$p = 60\,\%$

6) Percentage of sample that were juveniles over 8 inches long:

$p = (1)/(10)* 100\,\%$

$p = 10\,\%$

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