3 Questions
What is the claim being tested in Additional Question 1?
The proportion of adults who smoked a cigarette in the past week is less than 0.35.
What is the claim being tested in Additional Question 2?
The mean cost of a hospital stay for American women aged 18-44 increased between 2002 and 2011.
What is the claim being tested in Additional Question 3?
The population mean birth weight of Brisbane babies now differs from 3200 grams.
Learn how to use a confidence interval to test claims about proportions in statistical analysis. Practice recording calculator entries, interpreting results, and stating conclusions based on sample statistics provided in additional questions.
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