The empirical rule says that approximately 99.7% of any normal distributions falls within three standard deviations of the mean, which leaves 0.3% outside that range, and due to the distribution's symmetry, 0.15% to either side. This means
So
or about 99.9%.
Answer:
c. 150
Step-by-step explanation:
20 times 15 is 300
subtract 300 from 450
Hello!
How many marbles are in the jar all together?
3 + 2 + 4 = 9
We also know that there are 4 green marbles in the job.
So, I would assume that the answer is;
Green Marbles : Total Marbles or Green Marbles to Total Marbles.
<em>waffletowne</em>
Answer is 12
Pls mark me brainliest
Answer:
a. 385
b. 342
Step-by-step explanation:
To solve the problem we do the following:
The equation to calculate the sample size is:
a)
We have the following data:
Since no estimate of proportion is given, we will assume: p = q = 0.5
We know that For 95% confidence, z = 1.96
Width = 0.10
Hence, the margin of error would be:
0.10 / 2 = 0.05
E = 0.05
And so we can calculate sample size:
n = 385
b)
We have the following data for this point:
p = 2/3
q = 1 - p
q = 1 - 2/3
q = 1/3
And so we can calculate sample size:
n = 342
