A House Cleaning Service Claims That It Can Clean a Four

question 104

Multiple Choice

A house cleaning service claims that it can clean a four bedroom house in less than 2 hours. A sample of n = 16 houses is taken and the sample mean is found to be 1.97 hours and the sample standard deviation is found to be 0.1 hours. Using a 0.05 level of significance the correct conclusion is:

• A) reject the null because the test statistic (-1.2) is < the critical value (1.7531).
• B) do not reject the null because the test statistic (1.2) is > the critical value (-1.7531).
• C) reject the null because the test statistic (-1.7531) is < the critical value (-1.2).
• D) do not reject the null because the test statistic (-1.2) is > the critical value (-1.7531).

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Definitions:

Provider-performed Microscopy Procedures

Diagnostic tests performed directly by healthcare providers using a microscope to examine specimens for disease or abnormalities.

Moderately Complex

Describes tasks, systems, or problems that are somewhat challenging but not excessively difficult to understand or deal with.

PASS Method

An acronym used in fire safety training standing for Pull, Aim, Squeeze, and Sweep, relating to the use of fire extinguishers.

Chemical Hygiene Plan

A document outlining procedures, equipment, personal protective equipment, and work practices designed to minimize exposure to hazardous chemicals.