Purchase Solution

How to calculate confidence interval for the proportion

Not what you're looking for?

Ask Custom Question

In the week before and the week after a holiday, there were 10,000 total deaths, and 4972 of them occurred in the week before the holiday.

a.) Construct a 95% confidence interval estimate of the proportion of deaths in the week before the holiday to the total deaths in the week before and the week after the holiday.
______ <p < _______ (Round to three decimal places.)

b.) Based on the result, does there appear to be any indication that people can temporarily postpone their death to survive the holiday?

1.) Yes, because the proportion could not easily equal 0.5. The interval is substantially less than 0.5 the week before the holiday.
2.) No, because the proportion could easily equal 0.5. The interval is not less than 0.5 the week before the holiday.

Purchase this Solution

Solution Summary

This solution provides detailed explanation how to find the confidence interval for the proportion

Solution Preview

Hi there,

This is a Binomial setting: p=the proportion of death in the week before the holiday. X=4972 out of 10,000. So p=0.4972.
Then 1.96 square root ...

Purchase this Solution


Free BrainMass Quizzes
Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.