A Study Was Conducted at the University of Waterloo on the Impact

question 9

Multiple Choice

A study was conducted at the University of Waterloo on the impact characteristics of football helmets used in competitive high school programs.There were three types of helmets considered,classified according to liner type: suspension,padded-suspension,and padded.In the study,a measurement called the Gadd Severity Index (GSI) was obtained on each helmet,using a standardized impact test.A helmet was deemed to have failed if the GSI was greater than 1200.Of the 81 helmets tested,29 failed the GSI 1200 criterion.How many suspension-type helmets should be tested so that the margin of error does not exceed 0.05 with 95% confidence?

• A)385
• B)20
• C)271
• D)250
• E)82

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Definitions:

Number of Guests

Refers to the count of individuals attending an event or accommodated by a service, such as in a hotel or restaurant.

Activity Variance

The difference between the planned activity and the actual activity level, which can affect budgeting and operations.

Revenue

The total amount of money generated by a company through its activities, often from sales of products or services.

Flexible Budget Performance Report

compares actual results to budgeted amounts adjusted for the actual level of output, aiding in the evaluation of financial performance.