To approach a runway, a pilot of a small plane must begin a 10 degrees descent starting from a height of 1983 feet. To the neare
1 answer:
You might be interested in
Answer: Option 'c' is correct.
Step-by-step explanation:
Since we have given that
n = 240
mean = 22.3 hours
standard deviation = 6 hours
At 99% level of confidence, z = 2.58
So, interval would be
Hence, Option 'c' is correct.