YouTube Would Like to Test the Hypothesis That the Average

question 73

Multiple Choice

YouTube would like to test the hypothesis that the average length of an online video watched by a user is more than 8 minutes. A random sample of 37 people watched online videos that averaged 8.7 minutes in length. It is believed that the population standard deviation for the length of online videos is 2.5 minutes. YouTube would like to set α = 0.02. The correct hypothesis statement for this hypothesis test would be ________ .

• A)H₀: µ = 8.0; H₁: µ × 8.0
• B)H₀: µ c 8.0; H₁: µ < 8.0
• C)H₀: µ × 8.0; H₁: µ = 8.0
• D)H₀: µ c 8.0; H₁: µ > 8.0

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Definitions:

Reaction

A process in which substances (reactants) are transformed into different substances (products) through chemical change.

2-Methyl-2-Octene

An organic compound characterized by an eight-carbon chain with a double bond between carbon numbers 2 and 3, and a methyl group attached to the second carbon.

2-Methyloctan-3-Ol

A chemical compound, specifically an alcohol, that is derived by adding a methyl group and a hydroxyl group to an octane chain.

Hydroboration/Oxidation

A two-step organic reaction that converts alkenes into alcohols through a hydroboration step followed by oxidation.