You want to see if the number of minutes cell phone users use each month has changed from its mean of 120 minutes 2 years ago.You take a random sample of 100 cell phone users and find an average of 135 minutes used. A) $\mathrm { H } _ { 0 }$ : ? = 120 $\mathrm { H } _ { \mathrm { A } }$ : ? 120 B) $\mathrm { H } _ { 0 }$ : ? = 135 $\mathrm { H } _ { \mathrm { A } }$ : ? 135 C) $\mathrm { H } _ { 0 }$ : ? = 120 $\mathrm { H } _ { \mathrm { A } }$ : ?

Question

You want to see if the number of minutes cell phone users use each month has changed from its mean of 120 minutes 2 years ago.You take a random sample of 100 cell phone users and find an average of 135 minutes used.
A) $\mathrm { H } _ { 0 }$ : ? = 120 $\mathrm { H } _ { \mathrm { A } }$ : ? > 120
B) $\mathrm { H } _ { 0 }$ : ? = 135 $\mathrm { H } _ { \mathrm { A } }$ : ? > 135
C) $\mathrm { H } _ { 0 }$ : ? = 120 $\mathrm { H } _ { \mathrm { A } }$ : ? < 120
D) $\mathrm { H } _ { 0 }$ : ? = 135 $\mathrm { H } _ { \mathrm { A } }$ : ? ? 135
E) $\mathrm { H } _ { 0 }$ : ? = 120 $\mathrm { H } _ { \mathrm { A } }$ : ? ? 120

Quizplus · Accepted Answer

The Answer of You want to see if the number of minutes cell phone users use each month has changed from its mean of 120 minutes 2 years ago.You take a random sample of 100 cell phone users and find an average of 135 minutes used.
A) $\mathrm { H } _ { 0 }$ : ? = 120 $\mathrm { H } _ { \mathrm { A } }$ : ? > 120
B) $\mathrm { H } _ { 0 }$ : ? = 135 $\mathrm { H } _ { \mathrm { A } }$ : ? > 135
C) $\mathrm { H } _ { 0 }$ : ? = 120 $\mathrm { H } _ { \mathrm { A } }$ : ? < 120
D) $\mathrm { H } _ { 0 }$ : ? = 135 $\mathrm { H } _ { \mathrm { A } }$ : ? ? 135
E) $\mathrm { H } _ { 0 }$ : ? = 120 $\mathrm { H } _ { \mathrm { A } }$ : ? ? 120

You Want to See If the Number of Minutes Cell H0\mathrm { H } _ { 0 }H0​

You Want to See If the Number of Minutes Cell $\mathrm { H } _ { 0 }$