Answer:
a. No
b. Stratified Random Sampling was used
Step-by-step explanation:
a. No, I don't think the group was using a simple random sampling SRS ,because statistician students takes a survey of 200 samples and the sample was distributed into different categories , which is unlikely to happen in simple random sampling.
b. I think stratified random sampling was used because this type of sampling requires the population strata to be made.
In the question, the population is 200 and it is distributed into 4 strata which are :50 first-year students, 50 sophomores, 50 juniors, and 50 seniors.
Thus, the stratified random sampling was used
Answer:
false
Step-by-step explanation:
- If -1 us a solution then putting -1 in place of x will be 0
2p^2 + 3p - 4 - (-2p^2 - 3p + 4) =
2p^2 + 3p - 4 + 2p^2 + 3p - 4 =
4p^2 + 6p - 8 <==
<span>60 divide 9840 = </span>0.00609756