What statistical test t test z test etc do I use for this pr

What statistical test (t test, z test, etc.) do I use for this problem?

In a recent publication, the mitochondrial genome of spinach has been sequenced and is said to contain 327 kilo-base pairs. Your lab is also studying spinach and you decide to sequence the mitochondrial genome of the seven subspecies you have to see if this holds. Given the data below determine if it supports the conclusions of the paper. Include: what test you are running and why, hypotheses and assumptions. show all work.

Solution

We will be using t-test as populatiion mean and variance are unknown.

Null hypothesis will be mean=327

And we willl assume that the sample follows the bell curve