2. In New York City in the late 1970s and early 1980s, parking meter collections

Question

2. In New York City in the late 1970s and early 1980s, parking meter collections averaged $1:75
million per month with a standard deviation of $302 thousand per month. Assume that
the amount generated per month is Normal with the mean and standard deviation from the
previous sentence.
For about two years the city hired Brink's Inc. to do collections instead. The data le gives
the collections that Brink's reported to the city during that period.
(a) (2 points) What is the sample size for this data?
(b) (4 points) What is the sample mean?
(c) (6 points) The city was concerned that Brink's was stealing money from the parking
meter receipts. Assume that this sample of months is like a random sample. Given your
answers to the rst two parts, what is the probability of a sample at least as far below
the mean as the sample from the period of the Brink's contract?

1330143 1525370 1312257 1494717 1385822 1557598 1469066 1547011 1565671 1124576 1773806 1652490 1744558 1678286 1636597 1738847 1576383 1846508 1746899 1685611 1794467 1695017 1671626 1566107

Explanation / Answer

a) sample size for the data is 10 byears

sample mean = 1.75

c)

I need more inform,ation to answer this literal

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