From the drop-down list, select Both samples are in one column.
In Samples, enter Rating.
In Sample IDs, enter Hospital.
Interpret the results
The null hypothesis states that the difference between ratings for the two hospitals is 0. Because the p-value is less than 0.0001, which is less than the significance level of 0.05, the consultant rejects the null hypothesis and concludes that the ratings for the two hospitals differ.
μ₁: mean of Rating when Hospital = A
μ₂: mean of Rating when Hospital = B
Difference: μ₁ - μ₂
Equal variances are not assumed for this analysis.