McDonald decided to conduct a survey on employees in Canada. 10,000 employees in Canada are divided into 10 groups based on their place of work and 20 random samples from each province group were selected. What kind of sampling technique has been used in this scenario?

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next