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雷达卡
The owner of a petrol station wants to study fuel-purchasing habits ofmotorists at his station. A random sample of 60 motorists during a particular week gave the following results:
Amount purchased: x-bar = 42.8 litres, S =11.7litres.
The owner wants to testwhether there is evidence that the mean amount of fuel purchased at his stationis more than 40 litres.
(b) What is the p-value?
p-value =
0.9656
(e) Do we need to assume for the analysis in (b) that the amountspurchased follow a normal distribution? Discuss.
主要是(e)，不太懂需要不需要让样本服从正态分布。真心请求大家解答！！先谢过！！
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