Well, it depends, there may be multiple common factors, if it's the greatest common factor, then there is only one. The way to do this is to list all the factors of each number.
So Factors of
18: 1,2,3,6,9,18
27: 1,3,9,27
Common Factors : 1, 3, 9
Greatest Common Factor: 9
Answer:
it would be 7 and 8
Step-by-step explanation:
Well the answer would be 25% decrease.
hope that helped
Answer:
Find the same denominator
Multiple
Step-by-step explanation:
Answer: B) There is not convincing evidence because the interval contains 0.
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Explanation:
The 98% confidence interval (-0.36, 0.22) means we are 98% confident that the difference of proportions p1-p2 is somewhere between those two endpoints of -0.36 and 0.22 Values in this interval are possible values of p1-p2.
Note how 0 is in this interval. So it's possible that p1 - p2 = 0. Because of this, we fail to reject the null hypothesis. The null in this case is that p1 - p2 = 0 which can be restated as p1 = p2. The null is the assumption that the two population proportions (p1 and p2) are the same.
The alternative hypothesis is that p1-p2 is not zero. If we got a confidence interval like (0.22, 0.55), this example doesn't have 0 in the interval, then that would mean we reject the null since its unlikely that p1-p2 is equal to zero.
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In short,
- If the confidence interval contains 0, then you fail to reject the null
- If the confidence interval doesn't contain 0, then you reject the null.
In this case, we fail to reject the null and we don't have enough evidence to show that p1 = p2 is false. So for now, we assume it's true.