Answer: aA 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years = (0.163,0.189)
Step-by-step explanation:
Let p = population proportion of adults in the U.S. who have donated blood in the past two years.
Given: A Gallup survey of 2322 adults (at least 18 years old) in the U.S. found that 408 of them have donated blood in the past two years.
Sample size: n= 2322
Sample proportion 
Critical z-value for 90% confidence level : z*=1.645
The confidence interval for population proportion:

A 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years:

Hence,
Answer:
0.64285714285
Step-by-step explanation:
8 + 6 = 14
9/14 = 0.64285714285
0.64285714285 * 14 = 9
Please vote Brainliest (:
The answer is 103 pages/day
This is bcz 927 divided by 9= 103
Hope this helps and good luckkkk :)