Mathematics
10.01.2022 08:38
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The difference in proportions is p1 - p2 = 0.05 (fraternity members minus non-fraternity
The difference in proportions is p1 - p2 = 0.05 (fraternity members minus non-fraternity members), and the standard error is 0.08. the z-score for this difference in sample proportions is 0.885.
which of the following is the most appropriate conclusion?
a) there is a statistically significant difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
b) there is not a statistically significant difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
c) we do not have enough information to make a conclusion about the difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
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which of the following is the most appropriate conclusion?
a) there is a statistically significant difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
b) there is not a statistically significant difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
c) we do not have enough information to make a conclusion about the difference between the proportion of fraternity members who have used cognition-enhancing drugs and the proportion of non-fraternity members who have used cognition-enhancing drugs.
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4,9(74 marks)
x = 8
y = 7
Step-by-step explanation:
x • 6 = 48
In order to isolate the variable, you need to do the opposite operation which is division in this case.
Divide 6 by 6 to cancel it out. Whatever you do to one side has to be done to the other side. Now we're left with 48 ÷ 6
We can check this by plugging your answer in the equation
8 • 6 = 48
This statement is true
y • 7 - 1 = 48
Start with doing the inverse operation, which is addition. Add 1 to -1 to cancel it out and do the same to the other side
y • 7 = 49
Then, divide 7 by 7 and do the same to the other side
y = 7
Check to make sure you're right
7 • 7 - 1 = 48
49 - 1 = 48
48 = 48
This statement is true
I hope this helps. (:
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