Question

2. A study showed 110 cases of “blue lung disease” among 1,000 instructors who used blue dry erase markers in classes and 90 cases of “blue lung disease” among 1,000 instructors who did not use blue dry erase markers in classes. Test whether instructors who used blue dry erase markers in classes were significantly more likely to develop “blue lung disease” than instructors who did not use blue dry erase markers in classes.

a. State the null and alternative hypotheses associated with the test. b. What is the calculated value of the associated test statistic? c. What is the p-VALUE for the test (please use FOUR decimal places)? d. If α = 0.05, state your decision regarding the null hypothesis by comparing α to the p-VALUE. e. State your conclusion (meaning, describe what the decision means in this problem).

Answer 1

Let sample 1 is "instructors who used blue dry erase markers in classes" and sample 2 is " instructors who did not use blue dry erase markers in classes".

(a)

(b)

(c-d)

(e)

There is no evidence to conclude that instructors who used blue dry erase markers in classes were significantly more likely to develop “blue lung disease” than instructors who did not use blue dry erase markers in classes.