Part 1 Cape Breton University is accessed from Grand Lake Road, which is a busy highway that
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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 |
art 4
Consider the above to be a pilot study.
If the police now want to conduct a larger study that is more precise (i.e. a higher level of confidence with a smaller margin of error), how large of a sample size do they need?
Calculate the following to complete the table:
E | 1 km/h |
Level of Confidence | 99% |
z | Answer |
Standard Deviation | Answer |
What sample size (n) is required? | Answer |
Please answer all parts of the question.
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