The fuel consumption, in miles per gallon, of all cars of a particular model has a mean of 25 and a standard deviation of 2 The population distribution can be assumed to be normal A random sample of these cars is taken a Find the probability that sample mean fuel consumption will be fewer than 24 m...

a i P Z P Z 5 3085 ii P Z P Z 1 1587 iii P Z P Z 2 0228 b As the sample size i ...

The fuel consumption, in miles per gallon, of all cars of a particular model has a mean

Question:

The fuel consumption, in miles per gallon, of all cars of a particular model has a mean of 25 and a standard deviation of 2. The population can be assumed to be normal. A random sample of these cars is taken.
a. Find the probability that sample mean fuel consumption will be fewer than 24 miles per gallon if
i. a sample of 1 observation is taken.
ii. a sample of 4 observations is taken.
iii. a sample of 16 observations is taken.
b. Explain why the three answers in part (a) differ in the way they do. Draw a graph to illustrate your reasoning. Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...