Answer:
(B) x > -2
Step-by-step explanation:
1.2x - 5.8 > -8.2
Add 5.8 to both sides
1.2x -2.4
Divide 1.2 on both sides
x > -2
Higher
35.89 + 43.65 = 79.54
Answer:
1 yes and they have a scale factor of 1:2
2 yes and they have a scale factor of 1:4
Step-by-step explanation:
Answer:
$60
Step-by-step explanation:
30% * x = 18
3/10 * x = 18
x = 18 * 10/3
x= 60
Answer:
By using hypothesis test at α = 0.01, we cannot conclude that the proportion of high school teachers who were single greater than the proportion of elementary teachers who were single
Step-by-step explanation:
let p1 be the proportion of elementary teachers who were single
let p2 be the proportion of high school teachers who were single
Then, the null and alternative hypotheses are:
: p2=p1
: p2>p1
We need to calculate the test statistic of the sample proportion for elementary teachers who were single.
It can be calculated as follows:
where
- p(s) is the sample proportion of high school teachers who were single ()
- p is the proportion of elementary teachers who were single ()
- N is the sample size (180)
Using the numbers, we get
≈ 1.88
Using z-table, corresponding P-Value is ≈0.03
Since 0.03>0.01 we fail to reject the null hypothesis. (The result is not significant at α = 0.01)