A financial services company conducted a survey of a random sample of its customers. One of the items on the survey was as follows:
"The staff at my local branch can provide me with good advice on my financial affairs." Customers were asked to respond on the following scale: 1 - strongly agree 2 - agree 3 - neither agree nor disagree 4 - disagree 5 - strongly disagree The customer responses are summarized in Exhibit 7.21 below.

Based on the sample results, can you infer that more than half of customers agree or strongly agree that the staff at the local branch can provide good advice on their financial affairs? Use α = 0.05.

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"The staff at my local branch can provide me with good advice on my financial affairs." Number of Customers Strongly agree 20 47 Agree Neither agree nor disagree 32 15 Disagree Strongly disagree