The LCD of 33 and 22 is 66
Answer:
constructing a 90% confidence interval
Step-by-step explanation:
quizlet
at a 95% confidence interval By use of the table we have a critical value of 1.96, and so the margin of error is 1.96/(2 √ 900 = 0.03267, or about 3.3%.
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A 90% confidence interval has a z-score (a critical value) of 1.645. In conclusion, the margin of error is 2.52%.
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Answer:
2/25
Step-by-step explanation:
It will be 20/400 + 12/400
=2/25
Step-by-step explanation:
To solve for x, we set up our equation like this:
7x - 7 = 4x + 14
Next, we subtract 4x from the right side to cancel it out and then subtract 4x from the left side.
7x (-4x) - 7 = 4x (-4x) + 14
3x - 7 = 14
Then, we add 7 on both sides (to cancel the -7 out and place it on the right)
3x - 7 (+7) = 14 + 7
3x = 21
Finally, we divide both sides by 3 to isolate our variable, x.
3x ÷ 3 = x
21 ÷ 3 = 7
Our final answer: x = 7