Answer:
B. A random sample of 2,800 U.S. adults under 35.
Step-by-step explanation:
To have an unbiased and accurate sample, the sample should be representative of the population about which we are inferring.
Also, the bigger the sample size, the less margin of error we will have in the inference.
As the population in this survey is about the US adults under 35, the sample should be selected from this group.
From the options that select from this population, the largest sample is 2,800.
So the answer is Option B.
Answer:
y=10*20x
Step-by-step explanation:
the cost goes up 10$ every 20 mi.
Answer:
y=mx+b is 32x53 divide by 10 and =8.31=b+423.1/74=mx=647.bd-5634=y add them up and is your answer.
Step-by-step explanation:
Answer:
45 members are in the choir.
Step-by-step explanation:
Set up an equation:
Variable x = boys
3/6 = x/30
Cross multiply:
3 × 30 = 6 × x
90 = 6x
Divide both sides by 6:
15 = x
There are 15 boys.
To find the number of members in the choir, add the number of boys and girls:
30 + 15 = 45
Answer: yes it does
2x= 8
x= 8/2
x=4.
