Statistics questions

label Statistics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Apr 13th, 2015

Standard error = sqrt(0.6812/82+0.2082/109) = 0.077798

z = (9.09-9.22) /0.077798 = -0.13/0.077798 = -1.67

| z | = 1.67

Since we are having two sided alternative, we will only take the magnitude and not the sign. 

I am not sure whether they feed the answer as 1.67 or -1.67

That is why I am posting both the values. 


Apr 13th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Apr 13th, 2015
...
Apr 13th, 2015
Oct 17th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer