A company selling licences for new e$-$commerce computer software advertises that firms using this software obtain, on average during the first year,

a yield of $10\%$ on their initial investments. A random sample of $10$ of these

franchises produced the following yields for the first year of operation:

$6\mathrm{.}19\mathrm{.}211\mathrm{.}58\mathrm{.}612\mathrm{.}13\mathrm{.}98\mathrm{.}410\mathrm{.}19\mathrm{.}48\mathrm{.}9$

Assuming that population yields are normally distributed, test the company$$s

claim.