Answer
a. True
Step-by-step explanation:
Based on this survey we estimate that about
of the college students smokes. And a
confidence interval is
. So we know that
our estimative for the smoking rate is in the confidence interval with
certainty. We also know the estimative for the smoking rate in the general population is
. So we can write the two possible hypothesis:
Smoking rate is equal to
.
Smoking rate is not equal to
.
We will reject the null hypothesis
if the estimate doesn't fall into the confidence interval for the college students smoking rate.
Since this condition holds we reject the null hypothesis. So with
certainty we say that the smoking rate for the general population is different than the smoking rate for the college students.
Answer:
105 sweets
Step-by-step explanation:
There are 4 + 1 + 2 = 7 parts in total
Stephen gets 4 parts (or 4x)
Jim gets gets 2 parts (or 2x)
Given,
Stephen gets 30 more than Jim, we can write:
Stephen = Jim + 30
or
4x = 2x + 30
We can solve for "x":

There are 7 parts of sweets altogether (or 7x), we know x so:
There are:
7 * 15 = <u>105 sweets</u> altogether
Answer:
6x +4
Step-by-step explanation:
9 + 6x - 5 =
Combine like terms
6x +4
Let's assume that this function is linear.
Take any 2 of the points and find the slope of the line segment connecting them:
103 - 80
m = ------------- = 23, meaning $23 per day. Subtracting $23 from $34 (in the table), we get $11. Thus, the correct linear relationship is B.
4 - 3
50-54= 2
55-59= 4
60-64= 3
65-69= 3
I hope this helps But what I did was I counted how many numbers were in between each of the two numbers.