Problem Set 1

When you use the Kalon test kit 155 samples test positive, 143 of which were also positive by Western Blot. The remaining samples test negative but two of these samples are considered false negatives compared to Western Blot.

Recall: First, you tested all of the blood samples with the Western Blot test. The test showed that 145 of the blood samples were positive and 82 were negative.

1. For Kalon, calculate the sensitivity (enter your answer correct to 1 decimal place e.g 55.6):
2. For Kalon, calculate the specificity (enter your answer correct to 1 decimal place e.g 55.6):

Problem Set 2

When testing with the Biokit test you find that 123 of the samples tested negative and the remaining 104 test positive. 96 of the 104 Biokit positives are true positives while 74 out of the 123 Biokit negatives are true negatives.

Recall: First, you tested all of the blood samples with the Western Blot test. The test showed that 145 of the blood samples were positive and 82 were negative.

1. For Biokit Rapid Test, calculate the sensitivity (enter your answer correct to 1 decimal place e.g 55.6):
2. For Biokit Rapid Test, calculate the specificity (enter your answer correct to 1 decimal place e.g 55.6):