iCME 81 (page 14 of 16) A software developer wants to test if a new mobile phone app they have designed is better than a similar existing app. In particular they wish to test the hypotheses Ho: HN = HO and H1: HN > HO where IN is the population mean of a satisfaction rating for users of the new app and Ho is the population mean satisfaction rating for users of the existing app. (The satisfaction rating is scaled so that 'O' corresponds to 'worst app ever' and '100' corresponds to 'best app ever'.) The software developer gathers satisfaction ratings from 11 users of the new app and 15 users of the existing app. Using the procedure for a two-sample t-test, the test statistic turns out to be 1.35. What is the value of the critical value at the 5% significance level that this test statistic should be compared with? (Give your answer to three decimal places.)