Question

3. Similarly to #2, we want to look at ethnicity for the deaths in New York. We know that 16% of the deaths included in our data set were to people who identified as white for ethnicity. Assume we take a sample of 20 deaths.

1. How many people with white as an ethnicity would you expect to die from our sample of 20 deaths?
2. What is the standard deviation?
3. What is the probability that exactly 2 people with white as an ethnicity die?
4. What is the probability that more than 2 people with white as an ethnicity die?

6. Suppose we go back to the example from question 3. Suppose the probability remains at 16% but we now take a sample of size 100.

1. 1. What is the standard error of the proportion?
2. 2. What is the probability that the sample proportion of people who have white as an ethnicity is between 10% and 25%?

Answer 1