(a) Using a suitable probability calculator, the probability is 0.5987.
(b) The calculation is done the same way, but the population sigma is divided by the square root of the sample size. The probability is 0.9514.
-4 1/3 + 5 2/3 step by step
1 answer:
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Answer:
Step-by-step explanation:
so the question is asking about the time from 1500 feet to 1100 feet. How long did they fall, w/o a parachute. aka "freefall" so, at 1500 feet the jumper is really at time zero. so, plug in to the formula
1100 = -16 +1500
( x represents seconds so i'll change it to t so we know it's time )
1100 = -16 + 1500
now we can solve for t , to see how long the jumper falls
-400 = - 16 ( subtracting 1500 from both sides of equation )
25 = ( dividing both sides by -16 )
oh.. look at how nice that turns out.. :)
= t ( take the square root on both sides )
5 = t
the jumper fell for 5 seconds to get to 1100 feet