Answer:
x=-20
Step-by-step explanation:
Answer:
i think its B
Step-by-step explanation:
Answer:
The answer is there it is 21 miles/ but if its wrong then below will be right.
27-23= 4+15 = 19 miles
27 needed to be deducted first to find out how many miles it took from Corwen to Mold. Then as we found 4 miles we can then work out Mold to Wrexham = 15 Then add together = 19m
Step-by-step explanation:
its better if you label the 0-C = 27 C-M = 27-23 = 4 then M-W = 15 15+4 =19
We don't know what the exact p-value is, but we are told that it's as large as 0.005 which is smaller than alpha = 0.05
Since the p-value is smaller than alpha, this means we <u>reject the null hypothesis</u>.
The way you can remember this is "if the p-value is low, then the null must go". By "low", I mean "smaller than alpha".
Recall that the p-value is the probability of observing that specific test statistic, or larger. So the chances of chi-squared being 18.68 or larger is a probability between 0.0025 and 0.005; there's a very small chance of this happening. The p-value is based entirely on the assumption that the null is correct. But if the null is correct, then the chances of landing on this are very small. We have a contradiction that basically leads to us concluding the null must not be the case. It's not 100% guaranteed of course, but it's fairly strong evidence.
In short, the p-value being smaller than alpha = 0.05 means we reject the null.
In order to accept the null, the p-value must be 0.05 or larger.