5)
If a couple plans to have eleven children.
Number of gender sequence are possible = 2^11 = 2048
C) 2048
6)
The regression equation is = - 1.04x + 50.3
Slope = - 1.04
Slope is negative so the correlation also negative.
The correct option is
B) Negative linear correlation.
7)
We have to find the correlation coefficient ( r ) .
Formula is
n = 9
x | y | xy | x^2 | y^2 | |
10.4 | 52.5 | 546 | 108.16 | 2756.25 | |
8.7 | 48.2 | 419.34 | 75.69 | 2323.24 | |
13.3 | 60.8 | 808.64 | 176.89 | 3696.64 | |
12.4 | 61 | 756.4 | 153.76 | 3721 | |
18.7 | 84.4 | 1578.28 | 349.69 | 7123.36 | |
10.2 | 51.2 | 522.24 | 104.04 | 2621.44 | |
6.9 | 33.9 | 233.91 | 47.61 | 1149.21 | |
15.5 | 78 | 1209 | 240.25 | 6084 | |
15.9 | 80.8 | 1284.72 | 252.81 | 6528.64 | |
Total | 112 | 550.8 | 7358.53 | 1508.9 | 36003.78 |
A) 0.981
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For the remaining question please repost!
5) If a couple plans to have eleven children, how many gender sequences are possuble A)...
In an area of the Great Plains, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushels per acre). Calculate the linear correlation coefficient. Round to three decimal places. Rainfall (in inches), 8 6.3 10.9 10 16.3 78 4.5 13.1 13.5 = Yield (bushels per acre), y 46.5 42.2 54.8 55 78.4 45.2 27.9 72 748 O A. 0.981 B. 0.900 OC 0.899 D. 0.998