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Maths Puzzle
Numerical Ability
A car travels 60 miles in the same time that a car traveling 10 per hour faster travels 90 miles. What is the rate of each cars?
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A data set of size 19 has a correlation coefficient of r = -0.432. Test the significance of r at the 5% level and at the 1% level.
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I am so confused. Please help,
Ellen
Two stockbrokers are making cold calls to potential customers regarding a hot IPO. One of the brokers is able to get a new client every 0.125 hour, and the other is able to get a