The standard deviation of a sample is proportional to 1/√N where N is the sample size. In this case we are decreasing N by half, so we can write:
1/√(N/2) = √2 / √N
If we say that our standard deviation is proportional to 1/√N, the difference that occurred from decreasing the sample size by half resulted in an increase in the standard deviation by a factor of √2.
Therefore, the standard deviation is multiplied by √2.
Answer:4 min
Step-by-step explanation: 2 hours divided by 30 equals 4 so if there are two left and 8 min left 8/2 equals four per question
4+3=7
That is because using PEMDAS you basically get (+4)=4 and (+3)=3 hence the equation is 4+3=7
S= savings before she bought the dress s - $55 would be her new balance after she bought the dress.
We could also talk about her savings now (after her purchase). If we let n=now
n + $55 would be her balance before she bought the dress.
Answer:
50 499/1000
Step-by-step explanation:
50.499
There are 3 digits after the decimal
Our denominator is 1 with 3 zero's 1000
50 499/1000
