Mike's age is five more than three times his sister's age. Mike is seventeen years old.
2 answers:
Answer:
The correct option is B) .
Step-by-step explanation:
Consider the provided information.
Mike's age is five more than three times his sister's age. Mike is seventeen years old.
Let Mike's sister age is x.
Five more than three times his sister's age can be written as:
Mike is seventeen years old.
Hence, the required equation is .
Thus, the correct option is B) .
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Answer:
The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
99% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..