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Qbus5001考试倒计时最后三天！！
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QBUS5001期中考试
最最最全面详细的考试解析！
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QBUS5001 期中考试
考试时间：4月14日 (周日)
考试时长：80分钟
考试范围：Week1-5
考试题型：6道大题
QBUS5001 往届纸质考试特点：题量大 时间紧
QBUS5001的纸质考试，计算部分会涉及大量计算器的操作及查表，并且由于题目题干会很长，对英语读题能力有一定的要求。所以考试时间会很紧张，每学期都会有大量同学来不及答完全部题目。
另外，根据这学期的Coordinator的出题风格，概念题的考察会很灵活。因此在复习备考时应侧重理解，不可死记硬背。
QBUS5001 期中考试重点分析
这学期考试范围Week1-5。
Week1介绍了最基本的统计指标及统计学概念。作为整门课的基础，在期中单独出题考察不多，更多的是作为后续内容的铺垫。
Week2主要涉及概率相关的计算。虽然是高中数学内容，但有时出题灵活，容易出现难题。
Week3主要涉及常见的概率分布，以及在各个概率分布下的计算。可以说是期中考试的重中之重，需要大家无盲点掌握！
Week4介绍了抽样相关的概念，以及中心极限定理。这部分单独出题考察并不多，更多的是作为整门课后续内容的基础。
Week5介绍了抽样估计的基本运算，内容抽象，理解难度大。这部分内容不仅是期中考试的重点，也会是期末全部内容的重要基础。
QBUS5001 期中经典考题
虽然下面的例题是往年的选择题，
但也很有可能会出现在今年期中考试大题的某一个小问里哦~~
经典例题 01
Dreamworld on the Gold Coast, Queensland, is one of the tourist must-go attractions. As this theme park is so popular, there is always a queue outside the ticket offices in the morning. The waiting time (in minutes) before getting served by a ticket officer can be modelled by an exponential "E" 𝑥𝑝(𝜆) distribution with 𝜆 = 0.12$500,000
1) Find the probability that a visitor has to wait for more than 15 minutes in a queue in a particular morning.
2) A visitor has been waiting in a queue for 5 minutes. Find the probability that she has to wait for another 5 or more minutes to get served by a ticket officer.
3) At the exit gate of the theme park, 100 visitors are selected at random. Find the probability that 20 or less of them have waited in a queue for more than 15 minutes in the morning. You may use Excel to calculate the exact probability.
考点：Week3
分析：概率分布知识点经典考题，基本体现考试常规难度。对于类似题目，需要在熟练Excel公式的前提下，找对每一问所对应的概率分布。
经典例题 02
If the Student t distribution is incorrectly used instead of the Standard normal distribution when finding the confidence interval for the population mean, and the population variance was known, what will happen to the width of the confidence interval?
A. The confidence interval would have the same width.
B. The confidence interval would be wider than it should be, as t is flatter than z.
C. The confidence interval will be narrower than it should be as t is flatter than z.
D. None of these choices are correct.
考点：Week5
分析：抽样估计部分概念题，考察t分布与z分布的区别。对于抽样估计部分，考试不止会考计算，还会考概念题。因此学习时候得理解每个公式的原理，这样才能应付全部类型的题目。
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