Answer: The correct option is d
Step-by-step explanation:
Standard error measures how far the sample mean is from the population mean.
The formula for determining the standard error of the distribution of difference in means is expressed as
Standard error = √(s1²/n1 + s2²/n2)
where
s1 = sample 1 standard deviation
s2 = sample 2 standard deviation
n1 = number of samples 1
n2 = number of samples 2
From the information given
s1 = 2 pounds
n1 = 43 pounds
s2 = 1.7 pounds
n2 = 40 pounds
Standard error = √(2²/43 + 1.7²/40)
Unfortunately, I can't read it..about 42 grams should be the answer.
<span>The Greates Common Factor (GCF) is: 2 x 2 x 2 = 8</span>
Say x is the number
7x +3 = 39 -2x
Add 2x to each side
9x +3 =39
Subtract 3 from each side
9x =36
Divide by 9 on each side
x=4
Hope this helped
Answer:
1580
Step-by-step explanation:
632 x 2 = 1264 (8 minuets)
632 divided by 2 = 316 (2 minuets)
1264 (8 minuets) + 316 (2 minuets) = 1580
