Answer:
Step-by-step explanation:
Given, A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage provider.
Here , 1,627 adults are determining the sample.
Thus, sample size : n = 1627
Also, the sample proportion of adults felt fully engaged with their mortgage provider are
for 95% confidence level , critical z-value =1.96
Then , the 95% confidence interval would be :-
Substituting values , we get
Hence, the required 95% confidence interval using only 1 decimal : .
