Asked by Annet Jamrych on Jul 11, 2024
Verified
Has the introduction of more music download services changed the number of university students that download music for free from the internet? Two years ago,approximately 50,000 university students admitted to downloading music for free from the internet.
A) H0\mathrm { H } _ { 0 }H0 : ? = 50,000 HA\mathrm { H } _ { \mathrm { A } }HA : ? ? 50,000
B) H0\mathrm { H } _ { 0 }H0 : ? < 50,000 HA\mathrm { H } _ { \mathrm { A } }HA : ? = 50,000
C) H0\mathrm { H } _ { 0 }H0 : ? > 50,000 HA\mathrm { H } _ { \mathrm { A } }HA : ? = 50,000
D) H0\mathrm { H } _ { 0 }H0 : ? = 50,000 HA\mathrm { H } _ { \mathrm { A } }HA : ? < 50,000
E) H0\mathrm { H } _ { 0 }H0 : ? = 50,000 HA\mathrm { H } _ { \mathrm { A } }HA : ? > 50,000
Music Download Services
Online platforms that allow users to purchase and download digital audio files such as songs and albums.
University Students
Individuals enrolled in higher education institutions to pursue academic degrees or professional qualifications.
- Distinguish and deploy correct hypothesis test approaches in specific scenarios.
- Decide on the appropriate directionality (upper-tailed, lower-tailed, two-sided) for hypothesis evaluation.
Verified Answer
AA
aseel albaraweJul 12, 2024
Final Answer :
A
Explanation :
The null hypothesis ( H0\mathrm { H } _ { 0 }H0 ) typically represents no change or the status quo, in this case, that the mean number of students downloading music for free remains the same ( μ=50,000\mu = 50,000μ=50,000 ). The alternative hypothesis ( HA\mathrm { H } _ { \mathrm { A } }HA ) suggests there is a change, which could be either an increase or decrease in the number of students downloading music for free ( μ≠50,000\mu ≠ 50,000μ=50,000 ). This is a two-tailed test because it considers both possibilities of the mean being either less than or greater than 50,000.
Learning Objectives
- Distinguish and deploy correct hypothesis test approaches in specific scenarios.
- Decide on the appropriate directionality (upper-tailed, lower-tailed, two-sided) for hypothesis evaluation.
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