Part 1

Cape Breton University is accessed from Grand Lake Road, which is a busy highway that carries 40 000 cars per day, with a posted speed limit of 80 km/h.

Below are vehicle speeds recorded in km/h by the Royal Canadian Mounted Police in front of CBU over a 10 minute period - the police want to know if there is a problem with speeding at this location.

85

70

95

90

85

90

75

85

95

80

Does this data represent a population or a sample? choose one

Population/Sample/Neither

How many observations were reported? Answer........

Calculate the following:

Mean	Answer
Median	Answer
Mode	Answer
Range	Answer
Standard Deviation	Answer
Skewness (sk)	Answer

How symmetrically distributed is this data? choose one from four options

Significantly Positively Skewed

Significantly Negatively Skewed

Approximately Symmetrical

Perfectly Symmetical

Part 2

If order for the police to decide whether or not to be concerned about this data,

they want to develop a 90% confidence interval.

Should at orz distribution be used? choose one from three options

z-distribution

t-distribution

Neither

Calculate the following:

t or z value	Answer
Margin of Error	Answer
Lower limit	Answer
Upper limit	Answer

Based on this confidence interval, is it reasonable to say that the average driver:

i) exceeds the speed limit at this location? AnswerNo/Yes/Inconclusive

ii) travels at over 90 km/h at this location? AnswerNo/Yes/Inconclusive

iii) might travel at 85km/hat this location?AnswerYes/No/Inconclusive

Part 3

What does FPC stand for? AnswerFeline Patrol CommissionFinite Percentage CorrelationFunny Penguin ConventionFinite Population CorrectionFuzzy Paws Catalogue

What expression below is used to calculate an FPC? AnswerABCD

N - n N - n N - n 2 3 n D) A B) C) N N - 1 N- 1 N - 1