When you round 2.1 to the nearest whole number, the answer will be 2.
Here we have x + y - (x - y). Distributing the - sign results in
x + y - x + y Combining like terms results in:
2y
So, C is the correct answer.
Answer:
The required amount of mice is 11.82 gram.
Step-by-step explanation:
Given : Assuming that it is known from previous studies that σ = 4.5 grams. If we wish to be 95% confident that the mean weight of the sample will be within 3 grams of the population mean for all mice subjected to this protein diet.
To find : How many mice should be included in our sample?
Solution :
The formula used in the situation is

Where, z value at 95% confidence interval is z=1.96
gram is the mean of the population
gram is the standard deviation of the sample
Substituting the value, to find x sample mean





Therefore, The required amount of mice is 11.82 gram.
Is this asking about surface area or volume?
X = 10 because i’m telepathic and can see your paper