Ciara and her friends went to main event and bought fun passes for the day
1 answer:
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<u>(a) Construct a 95% confidence interval for the difference between the average number of intrusion attempts per day before and after the change of firewall setting (assume equal variance)</u>
Answer:
Plane's speed is 150 miles/hour
Step-by-step explanation:
Let the plane's airspeed be x
Speed of wind is 30 miles/hour
When a plane flew with the wind , Speed = (x+30)
So, the speed plain with wind on going = (x+30)
Since we are given that on returning plane fly against the wind .
So,When a plane flew against the wind , Speed = (x-30)
So, the speed plain against wind on returning = (x-30)
Distance = 720 miles .
So, time on going
Time on returning
Now we are given that the total time for the whole trip (going + returning) = 10 hours.
So,
So, the plane's speed is 150 miles/hour