Final answer:
The student's question pertains to performing a two-proportion z-test in statistics to determine if there is a difference in the proportion of smokers between females and males at a 90% confidence level.
Step-by-step explanation:
The student is asking whether at a 90% confidence level we can claim that there is a difference in the proportion of smokers between females and males.
This is a question related to hypothesis testing and confidence interval estimation in statistics, which falls under the category of Mathematics, more specifically Inferential Statistics, often covered at the college level.
To answer this question, one would typically perform a two-proportion z-test to compare the proportions of two different groups (in this case, females and males).
The steps would involve stating the null hypothesis (no difference between the proportions) and the alternative hypothesis (a difference exists), calculating the test statistic, and comparing it to a critical value or using a p-value to determine.
If the null hypothesis can be rejected at the given confidence level.Examples and studies regarding smoking trends, as mentioned in the provided information, may offer context but do not directly answer the student's question.
If the student provides sample data for both groups, the test statistic can be computed, and a conclusion can be reached regarding the claim.