Asurvey is taken to figure out the average temperature across all cities in the united states on a particular day. in 10 randomly chosen states, 40 cities are chosen to record the temperature. which sampling method describes this situation?

Stratified Random Sampling

Stratified random sampling is a sampling technique that is used when clearly identifiable subgroups or subpopulations can be distinguished in the population. As shwon in this specific case of the survey about te average temperature, where a group of cities is chosen.

Through this, the selection of the elements that will form part of the sample is made separately in groups (called strata), and within each stratum a simple random sample is drawn, without leaving any stratum without sampling.

yes

step-by-step explanation:

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.