QuestionQuestion 11
1 pts
2. You want to determine if there is a difference in the "pre blood pressure" measurements for the individuals who were randomly assigned to the calcium and placebo groups. This "pre blood pressure" measurement is the blood pressure measurement taken prior to receiving any treatment.
b) What is the alternative hypothesis?
Pre blood pressure measurements will be significantly lower in the calcium compared to placebo group
Pre blood pressure measurements will not be affected in the calcium group compared to placebo group
Studdy Solution
STEP 1
What is this asking?
We're checking if giving people calcium changes their blood pressure *before* they actually start the treatment, compared to people who got a placebo.
Watch out!
We're looking at the *before* measurements, not the *after* measurements.
It's tricky because we're checking if there's *already* a difference between the groups *before* anything even happens!
STEP 2
1. Understand the context
2. Formulate the alternative hypothesis
STEP 3
We're dealing with two groups: one that will receive calcium and another that will receive a placebo.
We're interested in their blood pressure *before* any treatment is administered.
STEP 4
The question is whether there's a difference in the "pre blood pressure" measurements between these two groups.
This means we want to see if the calcium group and the placebo group have different starting blood pressures.
STEP 5
The **alternative hypothesis** states what we're trying to prove.
In this case, we're trying to show that there *is* a difference in pre blood pressure measurements between the calcium and placebo groups.
STEP 6
The alternative hypothesis *doesn't* say which group will have higher or lower blood pressure, just that they'll be *different*.
It's like saying, "Hey, these two groups are not the same to begin with!"
STEP 7
So, the alternative hypothesis is that the pre blood pressure measurements *will* be affected in the calcium group compared to the placebo group.
It doesn't specify *how* they'll be affected, just that there *will* be a difference.
STEP 8
The alternative hypothesis is that pre blood pressure measurements *will* be affected in the calcium group compared to the placebo group.
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