Answer:
With a .95 probability, the margin of error is = 0.392
Step-by-step explanation:
Given -
In order to estimate the average time spent per student on the computer terminals at a local university, data were collected for a sample of 81 business students over a one-week period.
Sample size ( n ) =81
Standard deviation
= 1.8 hours
= 1 -.95 =.05
=
= 1.96 (Using Z table)
With a .95 probability, the margin of error is
Margin of error = 
= 
= 
Margin of error = 0.392
If you turned the point a 90 degrees, then it wuld end up at the x axis line..
sorry not much help...
Answer:
0
Step-by-step explanation:
He loses it all in 2 hours
Answer:
6/1 square feet per hour. Jeff can paint faster.
Step-by-step explanation:
So, to get Jeff's square feet to 60 minutes, you do 30x2= 60. So, you do that to 28. 28x2= 56. 56/1 is greater then 50/1. So 56-50= 6. Jeff can paint 6 square feet per hour, greater than Angela.
Hope this helped!