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A bank report looks at what strategies and measures financial institutions are pursuing to provide mobile financial services to their customers. In a response to a survey question about barriers hindering greater consumer adoption of mobile banking, in a survey of 128 financial institutions, 91 said security concerns are a barrier, 79 said lack of trust in the technology is a barrier, and 13 said difficulty of use was a barrier. Complete parts (a) through (d) below. a. Construct a 99% confidence interval estimate of the population proportion of financial institutions who said that security concerns are a barrier hindering greater consumer adoption of mobile banking. nothingless than or equalspiless than or equals nothing (Round to three decimal places as needed.) b. Construct a 99% confidence interval estimate of the population proportion of financial institutions who said that lack of trust is a barrier hindering greater consumer adoption of mobile banking. nothingless than or equalspiless than or equals nothing (Round to three decimal places as needed.) c. Construct a 99% confidence interval estimate of the population proportion of financial institutions who said that difficulty of use is a barrier hindering greater consumer adoption of mobile banking.

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