An Activity Has an Optimistic Time Estimate of 17 Days,a

question 8

Multiple Choice

An activity has an optimistic time estimate of 17 days,a most likely estimate of 22 days,and a pessimistic estimate of 32 days.What is the expected duration of the activity?

• A)22.83 days
• B)23.67 days
• C)24.33 days
• D)25.17 days

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Definitions:

Junk Science

Information or analysis claimed to be scientific but lacking in integrity, rigor, or adherence to established standards and methods.

Phase Change

A transition among the basic states of matter: solid, liquid, and gas, involving energy changes without altering the chemical composition of a substance.

Half-life

The time required for half the amount of a particular substance, such as a radioactive element or drug, to undergo a process of decay or elimination.

Isotope

Variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.