Math Problem Statement

After 2 months of the previous polling, you sample 2100 people and found that 630 of them say they support the Candidate

Find a 95% confidence interval for the increase in support in two months.

Test whether the null hypothesis of the support between the two time positions is the same vs. the alternative hypothesis of the support changing in two months

Solution

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Statistics
Confidence Intervals
Hypothesis Testing
Proportions

Formulas

Standard Error of Proportions
Z-test for Proportions

Theorems

-

Suitable Grade Level

Advanced Undergraduate