Answer:
none of these are correct
Step-by-step explanation:
For this case we must multiply the following expression:
Applying distributive property we have:
By definition of multiplication of powers of the same base, we have to put the same base and add the exponents:
Adding similar terms:
Answer:
Answer:
E. We are 95% confident that 27.8% to 32.2% of all Chinese adults smoke.
Step-by-step explanation:
x% confidence interval between a and b.
Interpretation: We are x% sure that the true value is between a and b.
In this question:
95% confidence level
30% with a margin of error of 2.2%.
So
30 - 2.2 = 27.8%
30 + 2.2 = 32.2%
So the correct answer is:
E. We are 95% confident that 27.8% to 32.2% of all Chinese adults smoke.
You mind explaining it? Like the question
To find x:
tan ° = opposite / adjacent
you should get, 6.008…
To find y:
cos ° = adajcent / hypotenuese
you should get, 11.666..
[I'll let you try how to find it with the clues given]
