Calculated t-statistic: We'll compute this using the given means and assumed standard error. - Critical t-value: 1.984 For total order value: - Calculated t-statistic: We'll compute this using the given means and assumed standard error. - Critical t-value: 1.984 Comparing the calculated t-statistics to the critical t-value will allow us to determine whether there is a significant difference between the means of the two versions in terms of conversions and total order value