Answer:
d. 0.133
Step-by-step explanation:
-Standard error is calculated using the formula:
#We substitute the given values in the formula to solve for E:
Hence, the standard error is 0.133 and the correct option is d
Answer:
Step-by-step explanation:
Use the formula Sum = (a + L)*n/2
The tricky part is n. That's the number of terms between 1 and 99 inclusive.
n = 99 -1 + 1 = 99
n = 99
a = 1
L = 99
Sum = (1 + 99)*99 / 2
Sum = (100)*99/2
Sum = 4950
Answer:
250 boys
Step-by-step explanation:
We know that the ratio is 9:10 from girls to boys
Take 225 and divide it by 9
225 ÷ 9 = 25
So we know that 25 is a factor of 225
We can the number of boys and multiply it by 25 to get 250
If we put it in the ratio form:
225:250 = 9/10
Check work:
25 x 9 = 225
25 x 10 = 250
Answer:
.0025%
Step-by-step explanation:
You would first take 250 and divide it by 10 million
you would get .000025 you would then multiple it by 100 to get .0025
