$1.$ Using this data from the DAV case:

week sample size errors

$130018$

$230015$

$330018$

$43006$

$530020$

$630016$

$730016$

$830019$

$930020$

$1030016$

$1130010$

$1230014$

$2.$ What is n$?$

$3.$ What is M$?$