Question

Question 1 (1 point) Ata small elementary school the children in 3rd 4th, and 5th grades were surveyed to determine how many of them take some form of medication daily and how many do not. The results were used to create the contingency table. If one of these students is randomly selected, what is the probability they are taking a medication Question 3 (1 point) (This question contains the same data as the previous question) At a small clcmentary school the number of children in 3rd, 4th, and 5th grades were surveyed to determine how many of them take some form of medication daily and how many do not. The results were used to create the contingency table. If one of these students is randomly selected, what is the probability they are in third grade or arc taking a medication daily? daily? 3rd grade 4th grade 5th grade total 3rd grade4th grade5th grade total No daily medications 25 No Mcdications daily 22 20 Medications taken daily Take Medications daily 5 Tulal 25 70 Total 2723 0.355 0.75 0.065 0.66 0.118 0.47 0.41 0.145 (This question contains the same data as the previous question) At a small clementary school the number of childrer in 3rc, 4th, and 5th grades were surveyed to determine how many of them take some form of medication daily and how many do not. The results were used to create the contingency tab e. If one of these students is randomly selected, what is the probability they do not take a daily medication or they are in 4th grade? 3rd grade4th grade5th grade total 22 20 Question 4 (1 point) (This question contains the same data as the previous question) At a small elementary school the number of children in 3rd, 4th, and 5th grades were surveyed to determine how many of them take some form of medication daily and how many do not. The results were used to create the contingency table. If one of these students is randomly selected, what is the probability they are in are in third grade given they take a medication daily? No Medications daily Take Medications daily 5 3rd grade 4th grade 5th grade total Total 27 23 26 76 No Medications daily 22 20 2567 Take Medications daily 0.263 Total 27 23 26 76 1.34 0.185 0.882 0.066 0.921 0.815 00.556

Answer 1

1)P(medication daily) =9/76=0.118

2) P(no taking medication or in 4th grade) =(67+23-20)/76 =0.921

3)P(3rd grade or taking a medicine) =(27+9-5)/76 =0.41

4) P(3rd grade |medication) =0.556