10.2 Means sd Unknown

He decides to retain supplier a if there is

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: tatistical evidence that supplier A’s condensers last longer on average than supplier B’s. In an experiment, 30 midsize cars were equipped with air conditions using type A condensers while another 30 midsize cars were equipped with type B condensers. The number of miles (in thousands) driven by each car before the condenser broke down was recorded. Should the president retain supplier A? (See Condensers.xlsx) Hypotheses: H0: μA – μB ≤ 0 Ha: μA – μB > 0 Example Hypothesis Tests The president of a company that manufactures automobile air conditioners is considering switching his supplier of condensers, Supplier A, who prices its product 5% higher than supplier B. Because the president wants to maintain his company’s reputation for quality, he wants to be sure that supplier B’s condensers last at least as long as supplier A’s. He decides to retain supplier A if there is sufficient statistical evidence that supplier A’s condensers last longer on average than supplier B’s. In an experiment, 30 midsize cars were equipped with air conditions using type A condensers while another 30 midsize cars were equipped with type B condensers. The number of miles (in thousands) driven by each car before the condenser broke down was recorded. Should the president retain supplier A? (See Condensers.xlsx) Hypotheses: H0: μA – μB ≤ 0 Ha: μA – μB > 0 Example Hypothesis Tests The president of a company that manufactures automobile air conditioners is considering switching his supplier of condensers, Supplier A, who prices its product 5% higher than supplier B. Because the president wants to maintain his company’s reputation for quality, he wants to be sure that supplier B’s condensers last at least as long as supplier A’s. He decides to retain supplier A if there is sufficient statistical evidence that supplier A’s condensers last longer on average than supplier B’s. In an experiment, 30 midsize cars were equipped with air conditions using type A condensers while another 30 midsize cars were equipped with type B condensers. The number of miles (in thousands) driven by each car before the condenser broke down was recorded. Should the president retain supplier A? (See Condensers.xlsx) Hypotheses: H0: μA – μB ≤ 0 Ha: μA – μB > 0 Example Hypothesis Tests The president of a company that manufactures automobile air conditioners is considering switching his supplier of condensers, Supplier A, who prices its product 5% higher than supplier B. Because the president wants to maintain his company’s reputation for quality, he wants to be sure that supplier B’s condensers last at least as long as supplier A’s. He decides to retain supplier A if there is sufficient statistical evidence that supplier A’s condensers last longer on average than supplier B’s. In an experiment, 30 midsize cars were equipped with air conditions using type A condensers while another 30 midsize cars were equipped with type B condensers. The number of miles (in thousands) driven by each car before th...
View Full Document

This document was uploaded on 03/05/2014.

Ask a homework question - tutors are online