An Agricultural Company Wanted to Know If a New Insecticide

question 8

Multiple Choice

An agricultural company wanted to know if a new insecticide would increase corn yields. Eight test plots showed an average increase of 3.125 bushels per acre.The standard deviation
Of the increases was 2.911 bushels per acre.Determine a 90% confidence interval for the
Mean increase in yield.

• A)(2.435, 3.815)
• B)(1.175, 5.075)
• C)(2.435, 5.075)
• D)(1.175, 3.815)
• E)(-5.075, -3.815)

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Definitions:

Unilineal Kin Group

A social group where membership is inherited through either the male (patrilineal) or female (matrilineal) line exclusively.

Nuclear Families

A family group consisting of parents and their children, regarded as a basic social unit.

Unilineal Descent

Descent traced exclusively through either the male or the female line of ancestry to establish group membership.

Matrilineal Descent

A lineage system where ancestral descent is traced through the mother's line rather than the father's.