The CEO of a large financial institution claims that, on average, their clients invest more than R95 000 per year in a particular portfolio. Test this claim at the 10% significance level if it was...

The CEO of a large financial institution claims that, on average, their clients
invest more than R95 000 per year in a particular portfolio. Test this claim at
the 10% significance level if it was found that a sample of 26 clients invested an average of R94 000 in the portfolio over the last year, with a standard
deviation of R11 000.