Answer:
0.9812
Step-by-step explanation:
Given that human weights are normally distributed with mean 175 and standard deviation 36 pounds
For a sample of 9 people std error of sample would be
Thus we find that sample mean is N(175, 12)
The plane will lift safely if sample average <200 pounds
i.e. Probability that it can safely lift off (i.e., the average weight of a person in the helicopter is less than 200)
=
~0.981
Um. It might be 100. I do not now. Sorry
Answer:
Mr. Allen sold 88 fruit trees last week
Step-by-step explanation:
1) Mr. Allen gives a fixed amount of money to charity in addition to the amount of fruit trees he sells.
2) This fixed amount is $2500
3) $45.75 is the amount of money Mr. Allen makes per tree
4) This means that X = The amount of trees Mr. Allen sold last week