there were 60 dogs at the dog park last saturday, and 30 of them were purebreds. considering this data, how…
there were 60 dogs at the dog park last saturday, and 30 of them were purebreds. considering this data, how many of the next 18 dogs to arrive at the park next saturday should you expect to be purebreds? purebreds
Answer
Explanation:
Step1: Calculate the proportion of purebreds
The proportion of purebreds last Saturday is $\frac{30}{60}=\frac{1}{2}$.
Step2: Use the proportion to predict
Multiply the proportion by the number of new - arriving dogs. So the expected number of purebreds among the 18 new - arriving dogs is $\frac{1}{2}\times18 = 9$.
Answer:
9