Question

According to a recent study, not everyone can roll their tongue. A researcher observed a random sample of 300 adults and found 68 who could roll their tongue. Determine if this sample is sufficient to construct a confidence interval for this proportion. *
answer choices:
Yes, its a random sample
Yes, its a random sample and the proportion is above 20%
Yes, its a random sample, Large Counts conditions are satisfied, and the sample is less than 10% of the population
No.

Answer 1

Answer:

Option B is correct

Step-by-step explanation:

According to the sample study, out of 300 people 68 were able to roll their tongue. This means that almost 23% of people were able to do but it also means that there were 77% people who were according to the study. Although the study is just saying that not everyone can do, it means that to prove the study right we need just one person among the sample to make the assertion true.