A Federal Reserve Bank of Atlanta report looks at what strategies and measures financial institutions are pursuing to provide mobile financial services to their customers. In response to a survey question about barriers hindering greater consumer adoption of mobile banking, in a survey of 115 financial institutions, 81 said security concerns is a barrier, 68 said lack of trust in the technology is a barrier, and 16 said difficulty of use was a barrier.
Source: Data extracted from “2016 Mobile Banking and Payments Survey of Financial Institutions in the Sixth District,” Federal Reserve Bank of Atlanta bit.ly/2sfe0co.
Construct a 95% confidence interval estimate of the population proportion of financial institution who said:
a. Security concerns are a barrier hindering greater consumer adoption of mobile banking.
b. Lack of trust is a barrier hindering greater consumer adoption of mobile banking.
c. Difficulty of use is a barrier hindering greater consumer adoption of mobile banking.
d. You have been asked to update the results of this study. Determine the sample size necessary to estimate, with 95% confidence, the population proportions in (a) through (c) to within ±0.02.
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