Any one please solve the following question for me.
" The mean score on Expedia.com was 7.32 (sd = 1.87) and the
mean score on Kayak.com was 5.72 (sd = 2.99). Is there evidence that more people would
likely recommend Expedia.com over Kayak.com? What is the likely range for the difference
between means using a 95% confidence level?"