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.
Answer: C
Step-by-step explanation:
The Number Of pen in a package.
Answer:
33k - 15
Step-by-step explanation:
=> 8k-5(-5k+3)
=> 8k+25k-15
=> 33k - 15
Answer:
CHRISTMAS TREES
Step-by-step explanation:
for each number in the matrix, start by subtracting 1, then divide the number you got by 2
Answer:
I say the second one but I could be wrong..