Question: Create a 97% confidence interval estimate of the average increase in the amount of time the financial advisor described in Exercise 18 above is spending

Create a 97% confidence interval estimate of the average increase in the amount of time the financial advisor described in Exercise 18 above is spending with each of her clients.
In exercise
A financial advisor is concerned that the time she has to spend with her clients has increased because of the increasing complexity of the investment products available. The advisor asks her assistant to keep track of exactly how many minutes she spends with a random sample of her clients every January.
At the 3% level of significance, is there evidence that the amount of time the advisor spends with her clients has increased from a year ago? Can she attribute this to the increasing complexity of the investment products available?

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