QuestionA survey of 2279 adults in a certain large country aged 18 and older conducted by a reputable polling organization found that 421 have donated blood in the past two years. Complete parts (a) through (c) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). $$\hat{p}=0.185$$ (Round to three decimal places as needed.) (b) Verify that the requirements for constructing a confidence interval about p are satisfied.
The sample $\square$ a simple random sample, the value of $\hat{p}(1-\hat{p})$ is $\square$ , which is $\square$ $\square$ less than or equal to $5 \%$ of the $\square$ (Round to three decimal places as needed.) (c) Construct and interpret a 90\% confidence interval for the population proportion of adults in the country who have donated blood in the past two years. Select the correct choice below and fill in any answer boxes within your choice. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) A. There is a $\square$ \% probability the proportion of adults in the country aged 18 and older who have donated blood in the past two years is between $\square$ and $\square$ . B. We are $\square$ \% confident the proportion of adults in the country aged 18 and older who have donated blood in the