Mathematics, 24.10.2019 06:43 ari8361
Astudy sampled 350 upperclassmen (group 1) and 250 underclassmen (group 2) at high schools around the city of portland. the study was performed at the end of the school year and asked each if they had used steroids at any point in the last school year. of the upperclassmen, 23 claimed to have used steroids in the last school year, and of the underclassmen, 21 claimed to have used steroids. run a 95% confidence interval to test for a significant difference in the proportions of students who used steroids. enter the confidence interval - round to 3 decimal places.
Answers: 3
Mathematics, 21.06.2019 17:40
Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.
Answers: 2
Mathematics, 21.06.2019 20:50
What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex
Answers: 2
Mathematics, 21.06.2019 21:30
(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.
Answers: 2
Astudy sampled 350 upperclassmen (group 1) and 250 underclassmen (group 2) at high schools around th...
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