題組內容

2.(35%) The following table contains a random sample of prices fot hotel rooms in Cities X and Y.
6176275ab1415.jpg Assume that the prices for hotel rooms in both cities follow a normal distribution.

(c) Can you conclude that the mean price of a hotel room in City X is lower than one in City Y? (1) Assume that both samples are independent and the population variances of room prices in both cities are (10%) (2) Assume that the samples from both cities are paired-dependent.(8%) equal.