A delivery driver has an average daily gasoline expense of $55.00. The standard deviation is $10.00. The owner takes a sample of
1 answer:
Answer:
Step-by-step explanation:
Given that a delivery driver has an average daily gasoline expense of $55.00. The standard deviation is $10.00.
As per central limit theorem, for samples of large size drawn at random, the sample mean follows a normal distribution irrespective of the original distribution.
Hence here we can say sample mean
= N(55,1.361)
required probability =
the probability the mean of his sample will be between $45.00 and $65.00
=
i.e. almost a certain event.
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It will take 100 weeks to build the tower.
Since Donald Trump wants to build a 100 meter high tower as quickly as possible with blocks that are 100 meters long and 100 meters wide, but only 1 meter tall, and using special lifters, putting one stack on top of another stack takes one week regardless of how high the stacks are, to determine what is the shortest amount of time (weeks) that it will take to build the tower, the following calculation must be performed:
- Time per block x total blocks = Total time
- 1 week x 100 = X
- 100 weeks = X
Therefore, it will take 100 weeks to build the tower.
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