Answer:
6(4 + 5)
Step-by-step explanation:
You are supposed to use reverse distributive proper and pull out the greatest common multiple. Since 6 both multiply's 4 into 24 and 5 into 30 we can pull that out and we are left with this:
6(4 + 5)
Z=1.5
need anymore help be sure to ask me :)
Answer: I really dont know sorry
Step-by-step explanation:
Answer:
B. Paired T Test
B. H0: μd = 0 and Ha: μd < 0 where μd= mean difference in blood pressure (calculated as aspirin - placebo)
Step-by-step explanation:
As the experiment is based on the difference between the results of a pair, the most appropiate test is a paired t-test.
If the 80 people group had been dividided in 2 and then compare the means for each group, it would have been a independent samples t-test.
For each pair, a variable d (for difference) is calculated and used as the outcome sample to perform the test.
Then, the null hypothesis will state that the population mean for this difference is not significantly different from 0, and the alternative hypothesis claiming it is signficant different from 0.
The sample means for the treatment group and the placebo is not individually calculated, as only the difference for each pair is used as sample in a paired t-test.
9 is the answer negatives cancel out creating positve
