7 Th mean weit 6 bg 6 carrb s is \(\mu \mathrm { k }\) lg ams. An in p cto wish s to test wh th \(\mathrm { r } \mu = 20\) He weits a rand sampe 6 tb g ach s resh ts are sm marised s fb low s. $$\Sigma x = 430 \quad \Sigma x ^ { 2 } = \theta$$ Carryd th test at the \%o sig fican e lee 1. If B e th follw ig lin dpg to cm p ete th an wer(s) to ay q stin (s), th q stin \(\mathrm { m } \quad \mathbf { b } \quad \mathrm { r } ( \mathrm { s } )\) ms tb clearlys n n