Question

Experiment 2: Hematocrit In the second experiment, you will determine hematocrit for all students in the class to answer the research question: Is there a difference in hematocrit between male and female college students?

a. What basic type of study design will you use to answer the research question?

a) descriptive b) experimental c) neither

b.  More specifically, what type of study design will you use to answer the research question?

a) case study b) cross-over c) cross-sectional d) longitudinal e) pre/post f) randomized, controlled g) retrospective h) time series

c. What type of statistical test would be most appropriate to analyze these data?

a) Chi-square test b) dependent t-test c) independent t-test d) one-way ANOVA e) repeated measures ANOVA f) None of these is appropriate. g) You cannot run statistics on these data.

d. What is(are) the control(s)? Choose ANY that apply.

a) altitude of testing site b) hydration status of subjects c) sex of subjects d) training status of subjects e) There is none.

Answer 1

2

a) Answer- option (b) is correct

As we have to test whether there is any difference between the hematocrit between male and female college students nad for this we have to check the samples of blood of children and examine whether there is more WBC or RBCs . So , this is experimental design.

B) answer- the correct option is (f) i.e randomised controlled

As we don't know which group of samples contain more RBC and WBCs so we randomly select each experimental unit.

C) aanswer-- option ( c). Independent t- test is correct option.

As we have two test here means i.e. on an average there is significant difference between male and female hematocrit. And both male and female samples are independent of each other .

D) answer- option ( c) is correct

As we know control variables are those which experiment or wants to make constant and observe it carefully so here sex is constant i.e. for male the experimentor first observes and then for female by making them constant while observing so sec of subjects.