Use the distributive property to write an equivalent expression. 3(8-9)
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The mean and standard deviation for the number of boys in the 950 babies are 475 and 15.41, respectively
<h3>How to determine the mean and the standard deviation?</h3>From the complete question, we have:
P(boy)= 0.5
Sample size = 950
The mean is then calculated as:
This gives
Evaluate
The standard deviation is calculated as:
This gives
Evaluate
Hence, the mean and standard deviation for the number of boys in the 950 babies are 475 and 15.41, respectively
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This is the problem that we need to solve. The best way to get about it is to first:
- Multiply the constant numbers (3 and 17). 3×17 is 51.
- Next multiply the radicals.
- Simplify the squareroot of 108 since it is 49 times 2. It would be equal to 7 squareroots of 2.
- Our final answer would be:
- 51 x 7 is 357, so the answer above is right.
The skills needed are multiplication, mulitplication of radicals, and simplifying radicals, so if you want to review anything use these as reference.
Hope you understood and have a nice day!!