Statistical tests. Match up the following studies with the most appropriate stat

ID: 3178318 • Letter: S

Question

Statistical tests. Match up the following studies with the most appropriate statistical test.

* Are three sample means different from one another? H0: 1 = 2 = 3.

* Compare the mean rolling velocity of 2500 leukocytes at a low fluid shear rate,

with the mean rolling velocity of 3000 leukocytes at a high fluid shear rate.

* Compare the red blood cell counts of 20 patients before and after treatment with

erythropoietin.

* When do fibroblasts stop spreading on fibronectin? Compare the average area of

12 cells at t=30min with the average area of 10 cells at t=120 min.

* Mortality rates of different groups of leukemic mice are presented in a 4×2

contingency table. Test for differences among the populations.

(A) Two-sample z test.

(B) Paired t test.
(C) Two-sample t test. (D) 2 test.
(E) Analysis of variance.

1) Are three sample means different from one another? H0: 1 = 2 = 3. (E) Analysis of variance.

Compare the mean rolling velocity of 2500 leukocytes at a low fluid shear rate,

2)with the mean rolling velocity of 3000 leukocytes at a high fluid shear rate. (A) Two-sample z test.

3)* Compare the red blood cell counts of 20 patients before and after treatment with

erythropoietin. (B) Paired t test.

* When do fibroblasts stop spreading on fibronectin? Compare the average area of

12 cells at t=30min with the average area of 10 cells at t=120 min.(C) Two-sample t test.

5)* Mortality rates of different groups of leukemic mice are presented in a 4×2

contingency table. Test for differences among the populations. D) 2 test.

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