Answer:
hi
Step-by-step explanation:
Answer:
option A
Step-by-step explanation:
the statement tell us that she slides the triangle 2 units down, so the vertical axis is the one that we are going to modify
we have the points: (1,2), (3,3) and (4,1)
so to these points we subtract "2" to the variable Y
I mean:
(1,2): 2-2=0
(3,3): 3-2=1
(4,1): 1-2=-1
finally we have:
(1,0), (3,1) and (4,-1)
The place value 8 in 281,480,100 is the 10th. And it is the same way in the other problem. How you get your answer is by counting like this EX: 1, 10, 100, 1,000, 10,000, 100,000... And so on.
Answer:
D)Yes, because the difference in the means in the actual experiment was more than two standard deviations from 0.
Step-by-step explanation:
We will test the hypothesis on the difference between means.
We have a sample 1 with mean M1=18.2 (drug group) and a sample 2 with mean M2=15.9 (no-drug group).
Then, the difference between means is:

If the standard deviation of the differences of the sample means of the two groups was 1.1 days, the t-statistic can be calculated as:

The critical value for a two tailed test with confidence of 95% (level of significance of 0.05) is t=z=1.96, assuming a large sample.
This is approximately 2 standards deviation (z=2).
The test statistict=2.09 is bigger than the critical value and lies in the rejection region, so the effect is significant. The null hypothesis would be rejected: the difference between means is significant.
The answer a
Because that’s what I said