exam
Maths Puzzle
Numerical Ability
The test statistic that is used to test hypotheses about the mean when a small sample is involved follows a _________ distribution.
a. t
b. z
c. chi-square
d. binomial
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exam Other Question
23. A cross-country skier leaves a camp to explore a wilderness area. Two hours later a friend leaves the camp in a snowmobile, travelling 4 mph faster than the skier, and meets the skier 1 h later. Find the rate of the snowmobile.
Solve the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
2x +3y = 1
5x +3y =16