Which algebraic representation matches the translation above?
2 answers:
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Answer:
a) The sample proportion of adults who trust DNA testing is p=0.91.
b) 98% CI:
We can claim with 98% confidence that the real proportion of adults that trust DNA is between 0.84 and 0.98.
Step-by-step explanation:
a) In this problem, we calculate p-hat, the sample proportion of adults who trust DNA testing, as
b) The z-value for a 98% CI is z=2.326.
The standard deviation of the proportion is:
Then we can define the CI as:
We can claim with 98% confidence that the real proportion of adults that trust DNA testing is between 0.84 and 0.98.