Answer:
Step-by-step explanation:
The standard error is used to determine the difference between the sample mean of the data and the true population mean.
Standard error = population standard deviation/square root of the number of samples
Given that the sample mean foot length of a simple random sample of 25 third-graders is 22.5 cm and the standard error of the mean is 0.8 cm, the correct interpretation for the standard error of the mean is
D. The typical distance between means of samples of size 25 and the population mean foot length is approximately 0.8 cm
Answer:
15
Step-by-step explanation:
21 - 6 equals 15 unless if its 21 + 6 then its 27
S + A = 450
$4S + $6A = $2340
S + A = 450
-6(S + A = 450)
-6S +-6A = -2700
4S + 6A = 2340
-2S = -360
-2S/-2 = -360/-2
S = 180
S + A = 450
180+ A =450
180-180 + A = 450-180
A = 270
Check
$4S + $6A = $2340
$4(180) + $6(270) = $2340
$720 + $1620 = $2340
$2340 = $2340
Insufficient data please indicate the question