To determine if there is a relationship between grade performance and extracurricular participation, north carolina state conducted a study of 112 students, recording the number of students in each of three extracurricular categories, and each of two grade categories. here are the results: source: felder, et al., "a study of student performance in an introductory chemical engineering course," 1992 asee annual conference proceedings, pp. 1516–1519. the following is the (edited) output of the chi-squared test in this case:

4

step-by-step explanation:

im pretty sure it's 4 beacsue 8/2 equals 4

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.

x = -5

step-by-step explanation: