From previous data, there appears to be no significant difference in the amount spent by male and female mobile wallet users. A market researcher hypothesizes that average amount spent by males is higher than females. To verify his claim, he conducted a study on a sample of 80 randomly selected male users and 100 randomly selected female users. It was found that the average amount spent by the males and females are RM298 and RM284, respectively. The corresponding standard deviations are RM70 for the males and RM74 for the females. At the 5% significance level, we would like to determine if the data provide sufficient evidence to support the market researcher's claim. Assume that the amount spent is normally distributed and population variances are equal. What is the value of the test statistic and conclusion for this hypothesis testing problem?