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1 answer:
Answer:
○ Domain: 3, 10, 15 Range: 7, 18, 21
○ Step 3
○ Yes, for every x-value, there is one and only one y-value.
Step-by-step explanation:
- Range is the solution set of y-values. Domain is the solution set of x-values.
- The equation of RESULTS FROM the equation of
when like-terms are combined.
- A function cannot have replicated x-coordinates. All the other answer choices are false, so you would pick this one.
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Answer:
The 95% confidence interval on the true proportion of helmets of this type that would show damage from this test is (0.169, 0.397).
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:
95% 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 95% confidence interval on the true proportion of helmets of this type that would show damage from this test is (0.169, 0.397).