Answer: their are 50 hip hop CDs
Step-by-step explanation: 10% of 250 CDs is 25CDs, so 20 % is 50 CDs and 70% is 175 CDs.
Answer:https://studyandanswers.com/mathematics/question22196149#
Step-by-step explanation:
Answer:
Simple random sampling
Step-by-step explanation:
Every element of the population does have an equal probability of getting chosen in a basic random sampling. The entire population should be included in your sample frame. To conduct this sort of sampling, technologies such as random numbers or other approaches relying completely on chance can be used.
This one is deceiving my simple. Start with the ratio 2/3. To find more ratios that are proportionate, simply multiply the numerator and denominator by the same number. Let's go with 2. So, 2*2/2*3 (which is 4/6) should be equal to 2/3. If you plug both into a calculator, you will see that they both equal 0.667, and are therefore proportionate.
Here are some more examples:
2/3, 4/6, 6/9, 8/12, 10/15
Answer:
its resolved
Step-by-step explanation: