Test Hypotheses About a Population Proportion
-In 1990, the Mean $\sigma = 1.1$

question 19

Short Answer

Test Hypotheses about a Population Proportion
-In 1990, the mean for the number of pets owned per household was 1.9. A poll of 1023 households conducted this year reported the mean for the number of pets owned per household to be 1.8. Assuming $\sigma = 1.1$ , is there sufficient evidence to support the claim that the mean number of pets owned has changed since 1990 at the $\alpha =$ $0.1$ level of significance?

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Definitions:

Payment

The exchange of funds or items for a service or product.

Balance Due

The amount of money owed on an account or invoice after payments have been applied.

Billing System

A combination of software and procedures that is used to issue and manage invoices and financial transactions for goods or services.

Cycle Billing

A system that sends invoices to groups of patients every few days, spreading the work of billing all patients over the month while billing each patient only once.