Mandrake only 75 have been able to take the techniques
Last updated: 6/6/2023
Mandrake only 75 have been able to take the techniques course Mandrake is interested in evaluating the course s effectiveness in propagating safety in the laboratories During regular lab classes lab instructors have recorded harmful lab incidents accidents misuse of lab equipment etc The school is looking at the data and examining two variables laboratory performance involved in no incident involved in exactly one incident or involved in 2 incidents and status regarding lab techniques course took the techniques course or didn t take the techniques course The contingency table below gives a summary of the data that have been gathered so far In each of the 6 cells of the table are three numbers the first number is the observed cell frequency the second number is the expected cell frequency under the assumption that there is no relationship between students laboratory performances and whether or not they took the techniques course and the third number is the following value fo Observed cell frequency Expected cell frequency fe Expected cell frequency The numbers labeled Total are totals for observed frequency Part 1 Fill in the missing values in the contingency table Round your expected frequencies to two or more decimal places and round your values to three or more decimal places JE Send data to Excel Took the techniques course Status regarding lab techniques the course Didn t take techniques course Total Yes Laboratory performance Involved in 2 incidents Involved in no incident 33 0 65 0 0 98 a Determine the type of test statistic to use Type of test statistic Choose one No Involved in exactly one incident 17 0 0 41 0 58 25 16 50 4 379 19 27 50 2 627 44 Total c Find the p value Round to three or more decimal places 0 75 Part 2 Answer the following to summarize the test of the hypothesis that there is no relationship between students laboratory performances and whether or not they took the techniques course For your test use the 0 10 level of significance 125 b Find the value of the test statistic Round to two or more decimal places 0 200 d Can Mandrake conclude that there is a relationship between students laboratory performances and whether or not they took the techniques course Use the 0 10 level of significance 5